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    Neutralisation Reaction

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    I will have also put the Universal Indicator into the conical flask, and I will stop the experiment when the solution is neutral, which should be when the alkali in the burette runs out. Predictions: I think that as the two solutions are added together, they will cause the temperature of their solution to rise as the neutralisation takes place. This is because when energy in the form of heat is given out of a reaction it is an exothermic reaction. Exothermic reactions usually need activation

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    This investigation will investigate the reaction of hydrochloric acid and sodium hydroxide where these two liquid compounds neutralise each other. We will be monitoring the temperature of the liquids as more of the hydrochloric acid (HCL) is added. [IMAGE]Sodium Hydroxide + Hydrochloric acid Sodium Chloride + water [IMAGE]NaOH + HCL NaCl + H2O I predict that this reaction will be exothermic as this reaction creates bonds, which will give out heat. The reaction creates bonds between

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    there will be a significant change in output when masses are added to the meter rule. · Amplifier: I am using the amplifier in order to make my model more sensitive and obtain a more accurate result. · Spring: Without the spring, when masses a put on the meter rule, the masses will pull the rule till the masses came to rest on a flat surface. Therefore I am using a spring to stop this from happening i.e. when masses are added the meter rule does not topple over and reading could be efficiently

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    Cooling Rate of Certain Liquids Scientific Investigations Experiments to Determine the Cooling Rate of Coffee, when Milk should be Added and what Container should be Used The aim of the first experiment was to find out and record the cooling rate of coffee under three different conditions and thus showing when milk should be added assuming you have a phone call. The three different conditions were chosen because these were the most likely situations encounted by someone who is making a cup

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    Hydroxide solution as the alkali in the burette with a molarity 0.01177 and 25ML of Pervis vinegar was placed in the beaker underneath the burette. Approximately four drops of Phenolphthalein indicator where added to the Pervis vinegar and then the measured amounts of NaOH were slowly added to the vinegar. The burette needed to be refilled several times and the average amount of NaOH solution needed to neutralise the Pervis vinegar was 181.5 ML. That same experiment was then tried using commercially

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    Evaluation of Advert

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    white would have appeared bland. I used blue because it is a very cool colour and is linked with cold colours and ice. I am trying to put across that the product is cool and ‘Smooth’ so cool blues play an important part in the colour scheme. I then added a picture of the product. I placed this in the top right and is quite big. This is to get across the product so there is no confusion in what is being advertised. I surrounded this with a black stroke to make it stand out even more and seeing as the

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    Web Page Creation Report

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    suitable, I created a custom colour by entering different amounts of Red, Blue, and Green until I found a colour that I liked. I then added this to the custom colours list so I could use it on the other pages. I then set all of the text and hyperlink colours to black so that all the text on the page would the same colour. Whilst I was in page properties, I added the page title that would be shown at the top of the browser by typing the title I wanted into the title box. With the properties

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    beet lab

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    For the lab experiment for testing the stability of beet cell membranes using pH, many materials were used as follows. Obtaining a beet we punch out cores, using a cork borer. After washing the cores we put each one inside a separate test tube, and added a different pH solution in each one. After 3 minutes in these exposure solutions, we took the beet out with a dissecting needle. Then transferred each beet to a separate test tube containing deionized water. After 20 minutes in these diffusion solutions

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    AMMONIUM NITRATE

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    AMMONIUM NITRATE NH4NO3 Problem Our task was to investigate what the optimum ratio of solute to solvent that will produce the maximum cooling/heating effect? Hypothesis With a smaller quantity of water (50mls) and the same amount of Ammonium Nitrate added. After any period of time the mixture will be a cooler temperature than that of a mixture with a larger quantity of water. Variables „X     Water „X     Teaspoons „X     Time „X     Ammonium Nitrate „X     Thermometer „X     Stirring (used thermometer)

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    stoppered flask (g) Mass after Bromine was added (g) Mass of Br2 (g) Initial burette volume (cm3) Final Burette volume (cm3) Amount of NaOH added (cm3) 136.78 137.81 1.03 100 67.4 32.6 Using the results ----------------- Bromine I used a mass of 1.03grams of Bromine. I arrived at this amount by weighing the volumetric flask without the bromine added then I weigh the flask with the bromine added. The different between which was 1.

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