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Sodium Thiosulphate Reaction Time Experiment - Introduction: In the investigation I am going to see how long it takes for sodium thiosulphate to react with hydrochloric acid, the sodium thiosulphate will be diluted with water, I will do this by having 60 ml sodium thiosulphate and 40 ml water but each time I will change the amount of sodium thiosulphate and water but they will both add up to equal 100ml, I will know when the reaction has taken place because the beaker with the chemicals in will go cloudy, we will put the beaker on a piece of paper with a x on it....   [tags: chemistry, chemistry experiment] 912 words
(2.6 pages)
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Love: A Chemical Reaction or a Social Phenomenon? - ... While the idea of love requires both the psychological and the physiological for the sake of this paper the emphasis will be placed upon the physiological theory. The anthropologist, Helen Fisher, divides love into three separate but overlapping stages-lust, attraction, and attachment. Lust is the initial feeling of attraction, romantic attraction encourages people to focus their energy on an often sexual relationship, and attachment involves a long term relationship. Each stage of love has different hormones that are released or used during the process....   [tags: Psychology]
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1246 words
(3.6 pages)
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Philosophy Paper #1: Personal Identity - ... With that said, it is my belief that defining personal identity relies on both bodily and mental continuity. No doubt this position leaves plenty of room for criticism, which I will attempt to address now beginning with bodily continuity. The body is in a constant state of transition, cells replacing cells by the thousands at any given time; how then can bodily continuity even be if the body is in a perpetual state of change. How could one be considered the same person if the parts are constantly being replaced....   [tags: Philosophy ]
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1056 words
(3 pages)
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My Educational Philosophy – A Work in Progress - ​As the end of my first semester of graduate studies concludes, I enjoy this opportunity to reflect on the ideologies, methodologies, and approaches I have learned throughout the semester that will serve as the foundation to which my educational philosophy can be built upon. Rooted in my philosophy of education, is a combination of what I believe the purpose of school is for, and, the factors that influence student success. Early on in the semester, I wrote in my reflection 1 paper that, “the purpose of school is to educate students, no matter their age, race, or religion, to become knowledgeable in all areas and aspects of life....” While I still agree with that statement, it is now, after a semester of insightful pedagogy and critical thinking, can I elaborate in greater detail as to the elements that I believe are instrumental to student success and the multifaceted purpose of school and education....   [tags: Reflection Paper]
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1072 words
(3.1 pages)
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Factors that Affect the Rate of a Chemical Reaction - Factors that Affect the Rate of a Chemical Reaction I am going to plan and carry out an investigation into one factor that affects the rate of a chemical reaction. That chemical reaction is going to be between sodium thiosulphate solution and dilute hydrochloric acid. To make this a fair test we will have to keep all variables the same except the one we area investigating. My variable that I am going to investigate is going to be the concentration of the sodium thiosulphate....   [tags: Papers] 1047 words
(3 pages)
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Investigate the effect of temperature on the rate of reaction - To investigate the effect of temperature on the rate of reaction Background Information: Chemical reactions take place all the time at many different rates, some are incredibly fast like an explosion-where you get no time to see what's happening or like rusting which could take years before the iron is completely rusted. The rate of reaction is extremely important because you need to know how long before the end of the session or you may not get results in time. In living organisms it's vital that all the chemical reactions take place at the rates which supply the cells with the things they need exactly when they need them....   [tags: GCSE Chemistry Coursework Investigation] 3176 words
(9.1 pages)
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Link Between Concentration and Rates of Reaction - Link Between Concentration and Rates of Reaction Aim In my investigation I am going to investigate the link between concentration and rates of reaction. The other things that affect the rate of reaction are temperature, surface area and the use of catalysts. However I could not try to do my experiment with these variables because the chemicals I am using are liquid which therefore means I am unable to vary the surface area, temperature would vary slightly therefore it would be unlikely I would get very accurate results and catalysts are too expensive to use....   [tags: Papers] 1334 words
(3.8 pages)
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Reaction of Hydrochloric Acid and Sodium Thiosulphate - Reaction of Hydrochloric Acid and Sodium Thiosulphate In this investigation I am going to investigate how fast the chemicals Hydrochloric Acid and Sodium Thiosulphate react. The four main variables that affect rate are: * Temperature - if the reactants are heated/cooled they have more/less energy. If they have more energy there is greater chances of successful collisions meaning the reaction occurs faster. * Concentration - if the solution is more concentrated there are more reactants there is a greater chance of successful collisions....   [tags: Papers] 982 words
(2.8 pages)
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Factors that Affect the Rate of a Chemical Reaction - Factors that Affect the Rate of a Chemical Reaction NaS O + 2HCl 2NaCl + H O + SO + S I will be trying to find out how concentration affects the reaction between thiosulphate and hydrochloric acid. Prediction: I think that if the amount of thiosulphate is increased and the amount of water is decreased then the reaction will take less time because the collision theory states that if the concentration is increased, the number of particles in the will also increase, therefore the chance of successful collisions is increased and this speeds up the rate of the reaction....   [tags: Papers] 508 words
(1.5 pages)
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Investigating Factors that Affect the Rate of a Reaction - Investigating Factors that Affect the Rate of a Reaction Aim === To investigate the rate of reaction when you combine the chemicals sodium thiosulphate and hydrochloric acid at different temperatures. Prediction ========== My hypothesis is that the higher the temperature the lower the amount of time taken for the reaction to take place and therefore the lower the temperature the longer the time will take for the reaction to take place. The reason that I think this is because I know that the higher the temperature the faster the particles will move....   [tags: Papers] 967 words
(2.8 pages)
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Investigating the Effect that Concentration Has on a Reaction - Investigating the Effect that Concentration Has on a Reaction INTRODUCTION ============ Aim- to investigate the effect that concentration has on a reaction on these factors: * Temperature rise * Heat evolved * Heat given off due to the neutralization between Hydrochloric Acid and Sodium hydroxide solution. Neutralization takes place when acids react with substances called bases. When they react their acidity is cancelled out, and the reaction always produces a salt and water....   [tags: Papers] 3728 words
(10.7 pages)
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The Effect of the Concentration of Acid on the Rate of Reaction - The Effect of the Concentration of Acid on the Rate of Reaction Aim: To find out how the concentration of an acid affects the rate of reaction. I am reacting different concentrations of HCL acid with the same concentration of sodium thiosulphate. I predict the HCL acid which is 2m, will react faster with the sodium thiosulphate. I know this because of concentration, all the particles have kinetic energy and in order for a chemical reaction to occur, particles in a solution need to collide into one another with sufficient force and energy....   [tags: Papers] 684 words
(2 pages)
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Rates of Reaction - The concentration of hydrochloric acid and the rate of reaction with sodium theosulphate - Rate of Reaction After doing my pilot run, i think that my method and apparatus used should be mostly the same: Apparatus - 1 conical flask - 1 lamenated 'x' - 3 test tubes - 1 thermometer - 1 stop watch - 3 pipettes Method: 1. Measure 10ml of 0.2mol/dm3 or 0.2moldm-3 sodium thiosulphate 2. Pour it into the conical flask 3. Add 40ml of distilled water for dillution. 4. Then add 5cm3 of dilute hydrochloric acid of concentration 2mol/dm3 at room temperature 5. Record the temperature of the mixture....   [tags: GCSE Chemistry Coursework Investigation] 1375 words
(3.9 pages)
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How Concentration affects the rate of reaction - How Concentration affects the rate of reaction I am investigating the rates of reaction and how the different variables can affect it. I know that the temperature, a catalyst, concentration, the surface area, light and pressure of a gas can affect the rate of reaction. In this particular experiment I am going to investigate on how the concentration of one of the reactants affects the rate of reaction. To show that the concentration does affect the rate of reaction I am going to carry out the reaction of sodium thiosulphate and hydrochloric acid....   [tags: GCSE Chemistry Coursework Investigation] 4726 words
(13.5 pages)
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The Effect of Sodium Thiosulphate on the Rates of Reaction - The Effect of Sodium Thiosulphate on the Rates of Reaction Introduction In my experiment I will investigate how the rate of reaction of Sodium Thiosulphate will be affected by the change in its concentration. But before this I carried out a trail experiment to see which solution, Sodium Thiosulphate or Hydrochloric acid would be more suitable. My Trail Experiment Method was to first collect all of the equipment needed, then I measured out the right amounts of each solution by measuring from the bottom of the meniscus....   [tags: Papers] 1066 words
(3 pages)
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The Effect of Hydrochloric Acid on the Rate of Reaction - The Effect of Hydrochloric Acid on the Rate of Reaction Sodium thiosulphate + hydrochloric acid ―› sodium chloride + sulphur + water + sulphur dioxide Na S O + 2HCl ―› 2NaCl + F + H2o + SO2 Preliminary Investigation: Before we carried out our investigation in full, we needed to do some preliminary work to prove that the variables we were changing were suitable, the concentrations of hydrochloric acid would not take too long or short a time and to discover what range of values would be needed on apparatus such as the conical flask....   [tags: Papers] 1779 words
(5.1 pages)
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A Student's Reaction to Used Car Websites - A Student's Reaction to Used Car Websites Getting a used car instead of a new car is becoming a trend in America today. People do not want to spend money for new cars cause of the fact that cars’ values diminish significantly. This is exactly what my friend thought when he bought his used Acura CL 2.3 Coupe 2D for 13,500 dollars last years from a local dealer. Now the question is whether the price he paid really makes sense considering the current options and conditions of the car. Unfortunately, my friend didn’t even do any research before he bought this car....   [tags: Sell Websites Buy Web Sites] 1521 words
(4.3 pages)
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Investigating Whether There is a Link Between the Concentration of Thiosulphate Used in the Reaction with Hydrochloric Acid and the Time Taken for the - Investigating Whether There is a Link Between the Concentration of Thiosulphate Used in the Reaction with Hydrochloric Acid and the Time Taken for the Reaction to Occur Previous helpful knowledge: The rate of reaction tells us how quickly a chemical reaction takes to occur. Chemical reactions take place over different time intervals and involve reactants forming products. Certain methods can alter the rate of reaction, such as: * Adding a catalyst * Changing in the surface area of a solid * Changes in the temperature * Changes in the concentration I know, from previous experiments, that sulphur is formed when HCL is added to NaSO solution....   [tags: Papers] 962 words
(2.7 pages)
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Investigating the rates of reaction of Sodium thiosulphate and hydrochloric acid - Investigating the rates of reaction of Sodium thiosulphate and hydrochloric acid Using my preliminary experiments I decided on using the following apparatus: - A conical Flask - A piece of White Paper marked with a black cross - Dilute hydrochloric acid - Sodium thiosulphate - Water - Measuring cylinder We must produce a piece of coursework investigating the rates of reaction, and the effect different changes have on them. The rate of reaction is the rate of loss of a reactant or the rate of formation of a product during a chemical reaction....   [tags: GCSE Chemistry Coursework Investigation] 2403 words
(6.9 pages)
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The Factors Controlling the Rate of the Sodium Thiosulphate and Acid Reaction - The Factors Controlling the Rate of the Sodium Thiosulphate and Acid Reaction Planning I am investigating the factors controlling the rate of thiosulphate / acid reaction. The reaction that will be taking place will follow the rate at which sulphur is formed in the reaction of sodium thiosulphate with dilute hydrochloric acid. In the experiment the sulphur will appear as an extremely fine precipitate. This will slowly be followed by a milky appearance in the reaction mixture in the conical flask....   [tags: Papers] 2583 words
(7.4 pages)
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Reaction Between Hydrochloric Acid and Sodium Thiosulphate - Reaction Between Hydrochloric Acid and Sodium Thiosulphate Introduction I will be conducting two experiments to determine how two factors affect the rate of reaction in the reaction between hydrochloric acid and sodium thiosulphate. It is a precipitation experiment. The equation allows us to see how this experiment will help us find how rate of reaction changes Sodium thiosulphate + Hydrochloric acid ---- Sodium chloride + Sulphur + Sulphur dioxide + Water Na2S2O3 (aq) + 2HCl(aq) ---- 2NaCl(aq) + S(s) + SO2(g) + H2O(l) The main factors that affect the rate of reaction of any experiment are -Pressure....   [tags: Papers] 2493 words
(7.1 pages)
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Rates of Reaction - Hydrochloric Acid and Dodium Thiosulphate - Rates of Reaction - hydrochloric acid and sodium thiosulphate Planning This investigation is about rates of reaction and what affects them. In this case I am going to look at hydrochloric acid and sodium thiosulphate which is a precipitation reaction. They react as in the equations below: sodium thiosulphate + hydrochloric acid -> sodium chloride + sulphur + sulphur dioxide + water Na2S2O3(aq) + 2HCl(aq) -> 2NaCl(aq) + S(s) + SO2(g) + H2O(l) A reaction will only occur where the particles of the reactants meet and combine....   [tags: GCSE Chemistry Coursework Investigation] 2299 words
(6.6 pages)
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The reaction between Sodium Thiosulphate and Hydrochloric acid - Investigate what happens to the rate of reaction when the concentration of Sodium Thiosulphate is altered in the reaction between Sodium Thiosulphate and Hydrochloric acid. Rates of reaction investigation Aim The aim of this coursework is to investigate what happens to the rate of reaction when the concentration of Sodium Thiosulphate is altered in the reaction between Sodium Thiosulphate and Hydrochloric acid. Below is the reaction equation Sodium + Hydrochloric Sodium + Water + Sulphur+ Sulphur Thiosulphate acid Chloride Dioxide Na2S2o3 (aq) + 2Hcl (aq) 2Nacl (aq) + H2o(l) + So2(g) S(s) Prediction I predict that as the concentration of Sodium Thiosulphate decreases, the reaction time will increase....   [tags: GCSE Chemistry Coursework Investigation] 1066 words
(3 pages)
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An Investigation to See how Concentration Affects the Rate of Reaction - An Investigation to See how Concentration Affects the Rate of Reaction Prediction: The higher the concentration of water mixed with the Hydrogen Chloride and Sodium Thiosulpate the slower the rate of reaction will be. Introduction: By adding the water into the experiment we are diluting the solution of the Hydrogen Chloride and Sodium Thiosulpate and therefore the water is slowing down the reaction time. The time taken for a reaction to take place is known as the rate of reaction and there are many things that can change the rate of reaction....   [tags: Papers] 1465 words
(4.2 pages)
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Rate of Reaction Experiment - Sodium Thiosulphate and Hydrochloric Acid - Rate of Reaction Experiment - Sodium Thiosulphate and Hydrochloric Acid To investigate the effect, of changing the concentration of a reactant, in a chemical reaction on it rate. The equation used for the experiment was: Sodium + Hydrochloric Sulphur + Sulphur + Sodium + water Thiosulphate acid dioxide chloride Na2S2O3 + 2HCl(aq) S(s) + SO(g) + NaCL(aq) + H2O The Collision Theory can explain reaction rates perfectly. A chemical reaction can only occur between particle when they hit or collide at a minimal amount of energy need for them to react this is called the activation energy....   [tags: GCSE Chemistry Coursework Investigation] 846 words
(2.4 pages)
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How changing the concentration changes the rate of reaction. - How changing the concentration changes the rate of reaction. Introduction We are going to look at the following factors during this investigation: 1 Why altering rate could be an advantage 2 Good ideas to control the rate of reactions 3 Briefly mention the factors that can change the rate of reaction such as: - Temperature Surface Area Catalyst Concentration I am going to find out if changing the concentration of nitric acid in water and see if it has any effect on changing the rate of which precipitate is formed when reacts with sodium thiosulphate....   [tags: GCSE Chemistry Coursework Investigation] 670 words
(1.9 pages)
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The Rate of Reaction Between Sodium Thiosulphate and Hydrochloric Acid - The Rate of Reaction Between Sodium Thiosulphate and Hydrochloric Acid Aim: I am going to investigate how changing the concentration of Sodium Thiosulphate affects the rate of reaction with Hydrochloric Acid. I am going to time how many seconds/minutes it takes until you can no longer see the black cross on a piece of paper under the beaker. Each time I do the experiment, I will change the amount of thiosulphate and water in the reaction mixture. I want to find out if the concentrated thiosulphate makes the reaction go quicker....   [tags: Papers] 1387 words
(4 pages)
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Sodium Thiosulphate's Effect on the Rate of Reaction with Hydrochloric Acid - Sodium Thiosulphate's Effect on the Rate of Reaction with Hydrochloric Acid Aim: I am going to investigate how varying the concentration of Sodium Thiosulphate affects the rate of reaction with Hydrochloric Acid. Prediction: The equation for the reaction is: [IMAGE] Sodium Thiosulphate + Hydrochloric Acid Sodium Chloride + Water + Sulphur + Sulphur dioxide [IMAGE] Or: Na2S2O3 + 2HCl S + 2NaCl + H2O + SO2 This reaction has a definite end point (when the cross on the test tube 'disappears')....   [tags: Papers] 1455 words
(4.2 pages)
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The Rate of Reaction Between Sodium Thiosulphate and Hydrochloric Acid - The Rate of Reaction Between Sodium Thiosulphate and Hydrochloric Acid Theory: Sodium thiosulphate and hydrochloric acid, react together to produce sulphur as one of the products Na2S2O3 (aq) + 2HCl (aq) Sodium Thiosulphate + Hydrochloric acid à 2NaCl (aq) + H2O (l) + S (s) + SO2 (g) Sodium Chloride + Water + Sulphur + Sulphur Dioxide Sulphur is a yellow precipitate, so the solution will turn an opaque yellow colour while the reaction is occurring. The reaction will continue and eventually the solutionwill turn completely opaque....   [tags: Papers] 2030 words
(5.8 pages)
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Factors Affecting the Rate of Reaction Between Sodium Thiosulfate and - Factors Affecting the Rate of Reaction Between Sodium Thiosulfate and Hydrochloric acid. Plan I will be conducting an experiment to find out if concentrating Thiosulfate and Hydrochloric Acid will effect the rate of reaction. I predict that the higher the concentration of the Thiosulfate, the quicker it will react with the Hydrochloric Acid. I will test: 20 Acid 20 Thio 0 Water 20 Acid 15 Thio 5 Water 20 Acid 10 Thio 10 Water 15 Acid 20 Thio 5 Water 10 Acid 20 Thio 10 Water The total volume of all the liquids will be kept the same....   [tags: GCSE Chemistry Coursework Investigation] 477 words
(1.4 pages)
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The Rate of Reaction Between Sodium Thiosulphate and Hydrochloric Acid - The Rate of Reaction Between Sodium Thiosulphate and Hydrochloric Acid Hypothesis: I believe that the resulting graph will like this: [IMAGE] · I know that the line will not go through the origin because at 0ËšC the two chemicals are still liquid therefore they will still react together. · I believe that as the temperature increases the rate of reaction will also increase this coincides with the collision theory which states that as the temperature increases the speed of the particles and the amount of energy they have also increases this causes more collisions to occur and therefore increases the chance of a reaction taking place....   [tags: Papers] 1574 words
(4.5 pages)
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Rates of Reaction - Sodium Thiosulphate and Hydrochloric acid - Rates of Reaction - Sodium Thiosulphate and Hydrochloric acid In this piece of coursework, I will study how concentration affects the rate of reaction. I will do so by timing the reaction of Sodium Thiosulphate with an acid. In this coursework, I will include background knowledge, prediction, safety, results, calculations, graphs, an analysis, conclusion and an evaluation. In my evaluation I will comment on how reliable my results were and how I could have improved my coursework in any possible way....   [tags: GCSE Chemistry Coursework Investigation] 2084 words
(6 pages)
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The Reaction Between Hydrochloric Acid and Sodium Thiosulphate - The Reaction Between Hydrochloric Acid and Sodium Thiosulphate Introduction ============ I am investigating how different concentrations of thiosulphate and distilled water in ratio to 10cm³ of hydrochloric acid affect the rate of reaction. I will also investigate if there will be a change in temperature after the reaction has occurred. I will know when the reaction is taking place as the solution turns from clear to opaque. The reaction that takes place is as follows: - Sodium + Hydrochloric à Sulphur + Sulphur + Sodium + Water Thiosulphate acid dioxide chloride Na S O + 2HCl à S + SO + 2NaCl + H O ------------------------------------ The reaction will have finished when the solution has turned completely opaque and it is visible that the solution is not turning increasingly more so....   [tags: Papers] 1105 words
(3.2 pages)
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The Rate Of A Reaction Between Hydrochloric Acid And Sodium Thiosulphate - The Rate Of A Reaction Between Hydrochloric Acid And Sodium Thiosulphate Aim: I am going to investigate the effect of changing the concentration of Sodium Thiosulphate on the rate of the reaction between Hydrochloric Acid and Sodium Thiosulphate. Prediction: I predict that as the concentration of the Sodium Thiosulphate doubles, the rate of the reaction will double. I believe that when the most concentrated solution is used the reaction would be at its fastest. Collision Theory: In a more concentrated solution there are more particles so collisions occur more frequently....   [tags: Papers] 648 words
(1.9 pages)
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Investigating the Rate of Reaction of Sodium Thiosulphate and Hydrochloric Acid - Investigating the Rate of Reaction of Sodium Thiosulphate and Hydrochloric Acid I predict that the higher the concentration then the faster the reaction, this is because when water is added the sodium thiosulphate solution and the hydrochloric acid have a more neutral pH and it becomes more dilute then it will be less reactive will the other particles in the solution. Equation for my experiment: [IMAGE]Sodium thiosulphate + Hydrochloric acid Sulphur + Sodium chloride Sulphur dioxide Water [IMAGE]Na2 S2 O2 + 2HCl 2Na Cl + SO2 + H2O + S The apparatus needed include: Goggles 3 Measuring cylinders (1 to measure sodium thiosulphate, another to measure hydrochloric acid and another for water) 1Beakers A piece of paper or tile with a dark cross-marked on it A stopwatch The materials needed: Hydrochloric acid Sodium thiosulphate solution Water The only variable will be the volume of sodium thiosulphate....   [tags: Papers] 707 words
(2 pages)
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The Effect of Increasing Concentration of Hydrochloric Acid on the Rate of Reaction - The Effect of Increasing Concentration of Hydrochloric Acid on the Rate of Reaction Aim: To investigate the effect of increasing the concentration of Hydrochloric acid on the rate of reaction. In gases and liquids, particles are in constant motion. It is clear that not all collisions are effective. Only small fractions of them seem to be 'successful' collisions. Particles in liquids and gases are moving at different speeds and colliding in different ways. Some collisions are 'head-on', while others are 'glancing' collisions....   [tags: Papers] 933 words
(2.7 pages)
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Rate of Reaction Between Sodium Thiosulphate and Hydrochloric Acid - Rate of Reaction Between Sodium Thiosulphate and Hydrochloric Acid Aim === During my investigating, I am going to investigate the factors that effect the rate of reaction between Sodium Thiosulphate and Hydrochloric Acid. Background Information The key variables in this experiment are: Concentration The reaction rate changes when the concentration is changed, before two particles can react they must meet. If the acid is at low concentrations, the acid particles will be widely spread out in the water, and the number of collisions between them and the Sodium Thiosulphate will be limited....   [tags: Papers] 981 words
(2.8 pages)
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Investigating How a Change of Concentration Affects Rate of Reaction - Investigating How a Change of Concentration Affects Rate of Reaction Plan In this investigation, I am changing the concentration of the sodium thiosulphate to see whether it affects the rate of reaction between sodium thiosulphate and hydrochloric acid. The reaction is said to have finished, once the black cross underneath the conical flask has disappeared. The precipitation of sulphur causes the black cross to disappear from view. The equation below shows what will happen when the sodium thiosulphate reacts with the hydrochloric acid in the conical flask....   [tags: Papers] 1034 words
(3 pages)
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Reaction To Who Moved My Cheese By Spencer Johnson - To start this paper, I initially typed in every one of Haw's motivational wall writings. I then analyzed them as they related to Johnson's message, my life, and to each other. Now, after writing this paper, I can assert that this story appeals to its audience on a level much more personal than their career. The story assists one's self in diminishing a fear of change. It is this core purpose that has the potential to influence the many facets of a human's life, be it in the workplace, love, or another achievement....   [tags: Spencer Johnson] 1206 words
(3.4 pages)
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Teaching-Learning Paper: Teaching the Client to Take a Radial Pulse - I chose to write my teaching-learning paper on how to take a radial pulse. I knew “Nurses are involved in client education to promote wellness, prevent or diagnose illness early, restore optimal health & function if illness has occurred, and assist clients and families to cope with alterations in health status.” (Craven & Hirnle, 2008, p. 347) However, I had to come up with a reason for choosing how to take a radial pulse. I know in the field the client would already have the needs to learn, so I asked my client....   [tags: nursing]
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2184 words
(6.2 pages)
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Review of Research Paper on Parkinson's Disease Treatment - Abstract Attempts to cure or slow down the progression of Parkinson’s disease have largely failed; researchers in this paper maintain this is obviously a direct result of the lack of insight into the pathogenesis of the disease. Parkinson’s disease is the product of the deaths of a number of dopaminergic (dopamine-secreting) neurons in the substantia nigra pars compacta region (SNc) of the brain. But what causes these deaths. In the paper “‘Rejuvenation’ protects neurons in mouse models of Parkinson’s disease,” Chen and researchers find that older neurons in the SNc are unusually reliant on calcium channels and that after blocking these channels, the cells are “rejuvenated” and begin acting like their juvenile counterparts; as a result, these cells become protected from Parkinson’s disease....   [tags: Biology Parkinson Parkisons] 2063 words
(5.9 pages)
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Reflection Paper: Texoil (from the point of view of the sellers) - Reflection Paper: Texoil (from the point of view of the sellers) Planning for this negotiation was more difficult than the first negotiation in class. The first negotiation had a point system; therefore I knew what the maximum, minimum and average amount points were. Not only does the Texoil negotiation not have a point system, but there were two people on my side (sellers) and only one on the other side (buyer)....   [tags: Business Negotiations] 1304 words
(3.7 pages)
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my paper - 1.0- “Edvard Munch created what may be called a ‘spiritual climate’. Two, even three generations of artists have produced works under his influence and spiritual inspiration. He was the initiator of the style of art termed Expressionism, defined as ‘expressiveness’”. (J.P. Hodin) No painter previously achieved such a revolutionary distinct break from the visible world as Edvard Munch. Drawing from personal traumatic experiences, Munch portrayed incredibly powerful works that depicted psychological rigours of the everyday man; something that Edvard had a distinct experience of....   [tags: essays research papers] 1607 words
(4.6 pages)
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Investigating How Changing The Concentration Of A Reactant Will Affect The Rate Of A Reaction - Investigating How Changing The Concentration Of A Reactant Will Affect The Rate Of A Reaction PLANNING AIM: ==== The rate of a reaction is the speed at which a reaction happens. If a reaction has a low rate, that means the molecules combine at a slower speed than a reaction with a high rate. Some reactions take hundreds, maybe even thousands of years while other can happen in less than one second. The rate of reaction depends on the type of molecules that are combining....   [tags: Papers] 1278 words
(3.7 pages)
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Investigation into Reaction Time when Hydrochloric acid and Thiosulphate are Mixed - Investigation into Reaction Time when Hydrochloric acid and Thiosulphate are Mixed Planning Simple plan This is an experiment to find out the reaction time of sodium thiosulphate and hydrochloric acid when they are mixed. We will use all equipment as safely as we can and wear goggles, gloves and an apron throughout the experiment. Fair Test I aim to keep the experiments fair tests by keeping everything the same throughout, except the concentration (Molar) of the hydrochloric acid....   [tags: Papers] 1034 words
(3 pages)
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How concentration affects the rate of reaction between Hydrochloric Acid and Sodium Thiosulphate - How concentration affects the rate of reaction between Hydrochloric Acid and Sodium Thiosulphate Chemistry Coursework How Concentration Affects a Reaction Aim: The aim of this experiment is to find out how concentration affects the rate of reaction between Hydrochloric Acid and Sodium Thiosulphate. Introduction: This experiment will be carried out by drawing a cross on a piece of paper and mixing hydrochloric acid and sodium thiosulphate together to see if the cross disappears. The concentration of hydrochloric acid would change every reaction to show that concentration effects a reaction....   [tags: GCSE Chemistry Coursework Investigation] 1294 words
(3.7 pages)
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The Effect of Temperature on the Rate of Reaction of Sodium Thiosulphate and Nitric Acid - The Effect of Temperature on the Rate of Reaction of Sodium Thiosulphate and Nitric Acid Planning Aim The aim of this investigation is to find out and observe how the temperature affects the rate of reaction. I am going to investigate the rate at which the solutions of nitric acid (HNO³) and sodium thiosulphate (Na²S²O³) turn cloudy (when mixed together), when the temperature is changed. Variables In this investigation I will only have one variable: § The temperature of both solutions (sodium thiosulphate and Nitric acid), so that I will be able to see the affect of temperature on the rate of reaction....   [tags: Papers] 2146 words
(6.1 pages)
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The Effect of Temperature on the Rate of Reaction Between Sodium Thiosulphate and Hydrochloric Acid - The Effect of Temperature on the Rate of Reaction Between Sodium Thiosulphate and Hydrochloric Acid I predict that as the temperature is increased the rate of reaction will increase. This means that the graph drawn up in my analysis will have positive link so it will look something like shown below, and will probably be curved as the increase in rate of reaction will not be exactly the same as the temperature is increased so the graph will look something like this. [IMAGE] This can be justified by relating to the collision theory....   [tags: Papers] 1331 words
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An Investigation on the Rate of Reaction between Sodium Thiosulphate and Hydrochloric Acid - An Investigation on the Rate of Reaction between Sodium Thiosulphate and Hydrochloric Acid Chemical Background When sodium thiosulphate is mixed with dilute hydrochloric acid it makes a cloudy liquid of sodium chloride, water, sulphur (this makes the liquid cloudy), and it gives of the gas sulphur dioxide. A precipitate of sulphur is made. Sodium   + hydrochloric =  sodium +  water  + sulphur + sulphur Thiosulphate          acid           chloride                              dioxide         The Chemical reaction happens as the particles collide because they have energy....   [tags: Papers] 1152 words
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Investigating the reaction Between Sodium Thiosulphate (Na2S2 O3) and Hydrochloric acid (HCl) - Investigating the reaction Between Sodium Thiosulphate (Na2S2 O3) and Hydrochloric acid (HCl) Aim --- I am investigating the rate of reaction between Hydrochloric acid (HCl) and Sodium Thiosulphate (Na2S2O3), when Na2S2O3 is mixed with water (H20). Background Knowledge The rate of a reaction can be speeded up by increasing the temperature; at a higher temperature the particles move faster and collide more often, as a result of this the reaction speeds up. Increasing the concentration of reactants in water will also speed up the reaction, as there are more reactive particles in the same volume and therefore more chance of a reaction taking place, which speeds up the reaction....   [tags: Papers] 995 words
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Investigating the Changes in Reaction When Sodium Thiosulphate is Added to Dilute Hydrochloric Acid - Investigating the Changes in Reaction When Sodium Thiosulphate is Added to Dilute Hydrochloric Acid Concentration Aim: To observe the changes in reaction when sodium thiosulphate is added to dilute hydrochloric acid. Prediction: I predict that the higher the concentration of hydrochloric acid is the faster the reaction will take place. Scientific knowledge: When the concentration of hydrochloric acid is high the reaction will take place faster. This is because in a high concentration of hydrochloric acid there are more particles so collisions will occur more frequently....   [tags: Papers] 757 words
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Investigating What Affects the Rate of Reaction Between Sodium Thiosulphate and Hydrochloric Acid - Investigating What Affects the Rate of Reaction Between Sodium Thiosulphate and Hydrochloric Acid Aim To investigate what variables influence the rate of reaction between sodium thiosulphate and hydrochloric acid. The specific variable we will be examining will be the amount of acid. Background Information Table of Variables Variables How it will influence my reaction How I will control the variable Temperature When you raise the temperature of a solution, the molecules collide more frequently due to the fact that they have more energy....   [tags: Papers] 910 words
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The Effect of Concentration on the Reaction between Sodium Thiosulphate and Hydrochloric Acid - The Effect of Concentration on the Reaction between Sodium Thiosulphate and Hydrochloric Acid We are given 2md/dm³ of Hydrochloric Acid = 10cm³. We are also given the measurement of Sodium Thiosulphate solution: 40g/dm³ = 50cm³ The chemical equation for this reaction is: 2Hcl + Na²S²O² 2NaCl + H²O + SO² + S I am going to investigate the effect of concentration in this reaction. To do this I will change the volume of 0.1 mol/dm³ of sodium Thiosulphate. We will keep the amount of Hcl the same, because if we altar that one it will totally change the results and there would be no pattern....   [tags: Papers] 627 words
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Rate of Reaction Between Thiosulphate and Various Concentrations of Hydrochloric Acid - Rate of Reaction Between Thiosulphate and Various Concentrations of Hydrochloric Acid Aim: The aim of this experiment is to determine the rate of reaction between thiosulphate(Na2S2O3) and various concentrations of hydrochloric acid (HCl). The rate of reaction will be measured rather crudely by seeing how long it takes for the mixture of water and hydrochloric acid to cloud up the beaker and make a large 'X' under the beaker in which the solution will be placed unvisable. Method: In my experiment, I will be using the following apparatus: o 2 measuring cylinders o Water o Beaker o Hydrochloric acid o Thiosulphate solution o Laminated card with a oversized 'X' on it Diagram: [IMAGE] [IMAGE][IMAGE] [IMAGE] Firstly, I will fill the beaker with 50ml of water from the laboratory taps....   [tags: Papers] 1647 words
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How Temperature Affects the Reaction between Sodium Thiosulphate and Hydrochloric Acid - How Temperature Affects the Reaction between Sodium Thiosulphate and Hydrochloric Acid Aim I am going to investigate the reaction between sodium thiosulphate and hydrochloric acid. The main aim is to find out how temperature affects the reaction; if it speeds it up, slows it down or changes it in any way. I will test the effects of temperature by timing how long it takes for a black cross to become non-visible underneath a beaker containing the reactants. I will consider what effect the temperature has on the number of collisions and explain my findings....   [tags: Papers] 1007 words
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How does temperature affect the rate of reaction between sodium - How does temperature affect the rate of reaction between sodium thiosulphate and hydrochloric acid. Aim: The aim of this experiment is to find out how the temperature affects the rate of reaction between sodium thiosulphate and hydrochloric acid. Prediction: I predict that the higher the temperature of the solution the faster the reaction will take place because the particles will collide more when the temperature rises. Plan Apparatus: Measuring cylinders Tripod Bunsen burner Heat proof mat Gauze mat Thermometer Conical flask Water (30ml) Hydrochloric acid (5ml) Sodium thiosulphate (20ml) Piece of paper with X on it By lianne milbanke Pliminary results: I decided to do some preliminary work because then I could see what amount of Sodium thiosulphate, Hydrochloric acid and Water I needed for the reaction, I tried it 5 times before I found one that was not too fast and not too slow....   [tags: GCSE Chemistry Coursework Investigation] 659 words
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Investigating the effect of Temperature on the reaction between Sodium Thiosuphate and hydrochloric acid - Investigating the effect of Temperature on the reaction between Sodium Thiosuphate and hydrochloric acid · Planning I am investigating the different temperatures on the reaction between Sodium Thiosuphate and Hydrochloric acid. The factors I could investigate would be temperature, concentration and substances. I have chosen to investigate Temperature. I predict that the higher the temperature the more rapidly the cross would obscure. This is because the higher the temperature the more often the particles collide and react, when the particles collide more often they would collide harder because they have more energy, making the collisions bigger and faster, the collision success rate is higher....   [tags: GCSE Chemistry Coursework Investigation] 1051 words
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Investigating The Rate Of Reaction Between Sodium Thiosulphate And Hydrochloric Acid - Investigating The Rate Of Reaction Between Sodium Thiosulphate And Hydrochloric Acid Preliminary Experiment Aim To investigate which out of the two - Sodium Thiosulphate and Hydrochloric Acid would give the best range of results when testing the rate of reaction between the two. Apparatus · Stop Clock · Dumpy Flat · 3 Measuring Cylinders · Sodium Thiosulphate · Hydrochloric Acid · Water · Graph Paper · Pipette · Safety Goggles Method · First I will gather results from changing the concentration of the hydrochloric acid....   [tags: Papers] 2703 words
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Position Paper: Aggression - ... Therefore, aggression is learned, not innately present. These theories have been accepted by many people, and influences how we teach children today. Applied to aggression, it has given rise to different but similar theories, such as script theory, and social interaction theory. Script theory is the theory that, as children, when violent acts are seen, those actions act as a “script” in the future as a behavioral guide (Anderson). An example is if a child sees a man upset and attack someone insulting them, they may believe aggression can be used against others....   [tags: Psychology]
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Isaac Newton Research Paper - ... The development of these theories founded what is now modern physics. These theories also gained Newton attention and credibility in the scientific community, which further helped spread his accomplishments. The discovery of these laws, laid down a basic foundation for the physics of motion. Newton's three laws of gravity changed the way in which the world was perceived, because of their accuracy in describing many unexplained phenomenons.3 They explained what happens as a result of different variables, but most importantly, they explained why and how these actions happen....   [tags: Scientific Research ]
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Comparing the Reaction of Franklin D. Roosevelt and Herbert Hoover to the Great Depression - Comparing the Reaction of Franklin D. Roosevelt and Herbert Hoover to the Great Depression The year was 1929. America goes through the biggest national crisis since the American Civil War. They called it the Great Depression. The Stock Market was going down, unemployment was going up, and money was becoming scarce. The United States had to look up to the one person who could lead the country out of this national catastrophe, The President. At this time the man who had that title was none other than Herbert Hoover....   [tags: American History] 815 words
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Fire Fighting Career Research Paper - ... According to another website, “Firefighting involves hazardous conditions and long irregular hours.”(www.bls.org online). Obviously, this career is dangerous and has longer hours than usual jobs. As one website says, “Fire stations usually have features in common with a residential facility like a dormitory.”(www.allthingspolitcal.org online). In other words, fire stations serve as a secondary home for the firefighters. Experts say, “When an alarm sounds, fire fighters respond rapidly, regardless of the weather of hour.”(www.allthingspolitcal.org online)....   [tags: Career Research ]
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Defined Roles: Hazardous or Beneficial - ... Instead, the men merely poke fun at the outlandish idea of a woman “held for murder and worrying about her preserves” (Glaspell 1970). The men do however notice the disorder of the house specifically the kitchen and immediately judge her as awful housekeeper. In this era, the primary job of the wife was to care for the house and children so this comment was especially degrading to the character of Mrs. Wright. By attacking Mrs. Wright’s housekeeping abilities, the country attorney indirectly stripped her of the worth and honor that came only with her gender role....   [tags: Gender Roles, Trifles, The Yellow Wall-paper] 1076 words
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Contemporary Hand Papermaking in North America and Europe - Contemporary Hand Papermaking in North America and Europe The practice of making paper by hand draws forth past centuries in a single sheet of tangled fibers. At the same time, the advances of both contemporary hand papermakers and modern technology have merged this tradition with innovation to create paper of unsurpassed beauty and quality. Despite the speed and economic advantages of machine-made paper, traditional handmade paper grasps its hold on the modern world, and mills across North America and Western Europe have re-emerged to produce fine handmade papers for artists, bookmakers, and conservators who seek the highest level of durability, permanence, and aesthetics....   [tags: Paper Mill Production Essays Papers]
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Diamond Coated Machine Tooling - Diamond Coated Machine Tooling Diamond is the hardest material known to man, in this day and age. Typically, diamonds have been known to demonstrate hardness values up to 12000 HV (Vickers Hardness) or approximately 100HRC. Diamond-coated Tungsten Carbide tools have demonstrated improved machining characteristics over coated tool steels commonly used today. With the increased use of composites, ceramics, and other ultra-hard / lightweight materials in numerous industries, diamond-coated machine tools are becoming more common since their performance improvements generally out weigh their increased cost....   [tags: Research Paper Diamond Coated Tool] 1916 words
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Science Research Paper - Corrosion and rubbing alcohol vs. corrosion and hydrogen peroxide “Are brass, lead, iron, and aluminum more likely to corrode in solutions of rubbing alcohol or hydrogen peroxide?” a. Definition-corrosion, rust, oxidation Corrosion is the atmospheric oxidation of metals. Rusting is essentially a process of oxidation in which iron combines with water and oxygen to form rust. Rust is the reddish-brown crust that forms on the surface of iron. Rust, a chemical compound, is a hydrated ferric oxide Fe2O3·nH2O, where n is usually 11/2....   [tags: essays research papers] 1190 words
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British Lit Term Paper - The definition of the word "Utopia" is defined as a place or state of ideal perfection (A Dictionary of the English Language 1575). How can a society reach a point of Utopia. Although many countries have tried to achieve such a goal, they have been unable to attain a state of perfection. In 1984, written by George Orwell, government takes control of every aspect of person’s life in an attempt to achieve "perfection". In Childhood’s End, written by Arthur C. Clarke, the human race is assimilated into a Supreme Being allowing humanity to enter into state of Utopia....   [tags: essays research papers] 2012 words
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Frankenstein Kickass Paper - The daughter of an active feminist, Mary Woolstonecraft Shelley eloped with the famous poet Percy Bysshe Shelley at the age of 15, and after was continually and profoundly influenced by his words and writings. Her novel Frankenstein is named among the best written and most meaningful of the gothic works, and is one of the few still popularly read today. A precursor to the Romantic trend in art and intellect, gothic novels rejected of the precepts of order, balance, idealization, and rationality that typified Classicism in general and late 18th-century Neoclassicism in particular....   [tags: essays research papers] 2716 words
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Macbeth Senior Research Paper - In Shakespeare’s lifetime he wrote many plays. Many of them were critically acclaimed and others cast aside. The crowd always wanted to be more thoroughly entertained and Shakespeare always tried to keep up with the people’s needs. In 1605, Shakespeare was being hounded for another work of genius. Hamlet and King Lear had just been completed and the people begged for more. He knew not of what to write and like many playwrights, he did research. He found two stories from Hollinshed’s Chronicles of England, Scotland and Ireland....   [tags: essays research papers] 1787 words
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Investigating the Effects of Dilution on the Rate of Reaction Between Sodium Thiosulphate and Dilute Hydrochloric Acid - Investigating the Effects of Dilution on the Rate of Reaction Between Sodium Thiosulphate and Dilute Hydrochloric Acid Aim: To investigate, the effects of dilution on the rate of reaction between sodium thiosulphate and dilute hydrochloric acid. Background information: The dilution variable does not occur to the hydrochloric acid but it occurs to the sodium thiosulphate. The reason why it does not occur in hydrochloric acid is because it needs to be constant and it is already dilute due to the acid's concentration....   [tags: Papers] 1820 words
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Investigating the Effect of Changing the Concentration of Sodium Thiosulphate in the Reaction Between Hydrochloric Acid and Sodium Thiosulphate - Investigating the Effect of Changing the Concentration of Sodium Thiosulphate in the Reaction Between Hydrochloric Acid and Sodium Thiosulphate Introduction The reaction equation for this experiment is: Sodium Thiosulphate + Hydrochloric acid = Sodium chloride + Sulphur dioxide + Sulphur + water Plan Input variable: Concentration of Sodium Thiosulphate. 1) 5ml Sodium Thiosulphate 25ml water 2) 10ml Sodium Thiosulphate 20ml water 3) 15ml Sodium Thiosulphate 15ml water 4) 20ml Sodium Thiosulphate 10ml water 5) 25ml Sodium Thiosulphate 5ml water 6) 30ml Sodium Thiosulphate 0ml water I decided on these variables by doing trial runs on the experiment....   [tags: Papers] 1419 words
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Investigating How Changing the Concentration of Hydrochloric Acid Affects the Rate of Reaction with Sodium Thiosulphate Solution - Investigating How Changing the Concentration of Hydrochloric Acid Affects the Rate of Reaction with Sodium Thiosulphate Solution Aim I aim to investigate how changing the concentration of Hydrochloric acid affects the rate of reaction with Sodium Thiosulphate solution. [IMAGE]Sodium + Hydrochloric Sodium + Water + Sulphur + Sulphur Thiosulphate Acid Chloride Dioxide (aq) (aq) (aq) (l) (g) (s) The reaction makes the solution go a yellow cloudy colour and a gas is given off....   [tags: Papers] 670 words
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The Effect of Concentration of Hydrochloric Acid on the Rate of Reaction between Sodium Thiosulphate and Hydrochloric Acid - The Effect of Concentration of Hydrochloric Acid on the Rate of Reaction between Sodium Thiosulphate and Hydrochloric Acid I am going to be investigating the effect of varying the concentration of Hydrochloric acid on the rate of reaction between Sodium thiosulphate and Hydrochloric acid. Chemical reactions can be affected by: Ÿ Changes in the surface area of solid reactants Ÿ Changes in concentration Ÿ Changes in pressure (with gases) Ÿ Changes in temperature Ÿ Catalysts Ÿ Light But I am changing the concentration, as it is the most practical experiment to carry out in a school laboratory....   [tags: Papers] 2030 words
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Coaching Exercise Reflection - I wanted to start telling the story of our experience by sharing the feelings I brought into this exercise. A few years ago I underwent an experience of coaching through several sessions that left me this taste in the mouth that the coaching as a tool to develop others is not very effective. I have not taken the time to deeply analyze what went wrong but in general if I had to choose to do it again I think I would choose another methodology to foster change. Its objective in general is to assist in building behavioral skills, but in my opinion to really look for a long lasting change you need to give a deeper understanding to the lack of a certain skills, strongly reflect on the variables linked to it as could be the emotions, values and motivations that conduce you towards a behavior different that that one desired....   [tags: Reflection Paper] 1464 words
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Diagnostic Summary Paper on Generalized Anxiety Disorder - ... Anxiety is known as a physiological or behavioral change that causes the formation of symptoms and affects the coping mechanism that affects a person’s everyday reaction to a stressor (Stuart 219). These changes occur at the autonomic nervous system, which influences the parasympathetic and sympathetic nervous systems which are in turn responsible for body processes. The sympathetic nervous system is responsible for the “fight or flight” defense system which is what causes anxiety. Anxiety is perceived by the cortex of the brain which sends a stimuli to the adrenal glands which then release epinephrine, which causes you to breathe harder, you pulse and blood pressure increase....   [tags: Medical Research]
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Rate of Reaction Between Marble Chips and Hydrochloric Acid - Rate of Reaction Between Marble Chips and Hydrochloric Acid To investigate the factors which affect the rate of reaction between marble chips and hydrochloric acid, with one in specific detail. Scientific knowledge: Marble chips erode when they are exposed to acid rain or pollution. Erosion is evident when you look at older marble buildings as in certain cases the erosion take a long time. It is more likely to occur in areas, where there is more pollution. This is because there are a greater number of industries in city than in the countryside....   [tags: Reaction Rates Chemical Reactions Essays] 4512 words
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Investigating Rates of Chemical Reactions - Investigating Rates of Chemical Reactions Planning. Introduction ============ I am going to investigate how increasing the concentration of a substance affects the rate of reaction. I will be studying how increasing the concentration of Sulphuric acid affects the rate of reaction when added to Magnesium. The equation for this is: Magnesium + Sulphuric Acid ® Magnesium Sulphate + Hydrogen Mg (s) + H2SO4 (aq) ® MgSO4 (aq) + H2 Background Knowledge ==================== There are many factors that affect the rate of a reaction; these include temperature, concentration, catalysts and surface area....   [tags: Papers] 944 words
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What Affects the Rate of Reaction? - What Affects the Rate of Reaction. Hypothesis To form a reaction the particles must collide in high speed. The faster the particles collide the more kinetic energy is produced. This produces a bigger reaction. There are five key variables that affect the rate of a reaction (in this case with a solid and a solution): * Change in temperature An increase in heat energy within the particles leads to more kinetic energy. Therefore there is more collision of particles and it increases the rate of the reaction....   [tags: Reaction Rates Energy Science Essays] 2334 words
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Different Variables Changing the Rate of Reaction - Different Variables Changing the Rate of Reaction To show that different variables can change the rate of reactions e.g. make them faster or slower. Theory: - That changing the variables in a reaction such as concentration, temperature and surface area will increase or decrease the rate of reaction. This would happen because, if you changed the concentration of a solution to a higher concentration the rate of reaction would increases, as there are more particles in the solution which means the particles would collide more....   [tags: Reaction Rates Science Gases Essays] 942 words
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Review of Research Paper on Cold Perecption via TRPM8 - Introduction: The first reaction to a minor wound or sprain is to apply ice. Cold's analgesic effects are a profound and under appreciated phenomenon. The nerve providing the sensation we know as cold acts to inhibit the "pain pathway." This wonderful nervous pathway is called TRPM8. This study indicates that the ion channel called "transient receptor potential melastatin 8", or TRPM8, is a primary component of cold sensation. Cultured nerve fibers devoid of this ion channel have considerably less response to the sub-ambient temperatures and cold-simulating chemicals that these nerves normally respond to fervently....   [tags: Biology Nerve]
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