Determining the Concentration Of Limewater Solution Aim: The aim of this experiment is it to find out the concentration of Limewater by performing a titration with hydrochloric acid which has concentration exactly 2.00M.. What is required for me is that I have to design my own experiment and chose the right and appropriate apparatus and equipment. I will be provided with 250cm3 of limewater, which has been made to which contains approximately 1g/dm3 of calcium Hydroxide. This hypothesis from
Determining the Concentration of a Limewater Solution Introduction Previous to conducting my experiment, research was carried out and the results of it adapted to aid me in solving the problem set. In the Advanced Chemistry Student’s Book by Nuffield, on page 86, I found a similar experiment to mine with a description of implementation, which aided me in the fact that I discovered the temperature of my solution did not need to be taken. This was because the solution of calcium hydroxide they
Finding the Concentration of Limewater in a Titration Using Hydrochloric Acid as a reagent Aim: The aim of this experiment is it to find the concentration of Limewater in a titration experiment using hydrochloric acid of concentration exactly 2.00M as a reagent. Equipment: I will need a burette, 25ml pipette, pipette pump, white tile, clamp stand, boss head, clamp, 250ml limewater, phenolphthalein, 100ml hydrochloric acid, volumetric flask, distilled water, conical flasks, safety gear
one substance to start with’. I came across this information in the EDEXCEL Modular Science revision guidebook 1. Thermal decomposition is the breakdown of a substance using thermal energy, this is not a reaction. Preliminary experiment Limewater and copper carbonate were used to see if a metal carbonate beaks down to produce carbon dioxide. This is what the experiment looked like: The equation for this: CaCo3(s) CuO(s) + Co2 (g) This experiment was to see if carbon dioxide
1. Compare the different groups who drank 7.5ml of fluid for each kg of body weight. Which group had the highest average urine production rate? Why? o The group with the highest average urine production rate of 7.5 mL of fluid for each kg of body weight was the diet caffeine free group. Diet caffeine free uses NutraSweet instead of glucose as the sweetening agent. NutraSweet causes high filtrate osmolality, which decreases reabsorption and moves water from out of the tissue into the urine, increasing
calculated in Equation 2. Both equations were able to be used given that the measurements were in terms of molality, which is not temperature dependent. After completing calculations, the average Kf of the three trials of the p-xylene and toluene solution was computed as as 4.56(C/m) as shown in Table 1, however, the theoretical value was slightly lower than calculated, 4.3(C/m). This resulted in a 6.04% error as shown in Equation 5. Possible causes of error could have resulted from adding too much
She does not single out children or make accusations, even when she is told that one child pushed another child out of the way. The next step is determining what the conflict is about and conveying that each child will be able to help find the solution. The educator facilitates this by asking the children for details about the conflict. She asks “What happened? And then what happened? Which side were you holding?” The educator allows each child to tell their version of what happened, and
Injectable Hydrogels: Processing and Application Introduction Hydrogels are defined as networks made up of polymer chains which are hydrophilic. They are in some cases found as a solid dispersed in a liquid. where water acts as the medium dispersed. Hydrogels are natural, highly porous or artificial polymeric networks. The hydrophilic structure allows hydrogels to hold the significant amount of water within their three-dimension structural systems. The extensive employment of hydrogel products in
Solutions to Global Warming Scientists report that global warming has been escalating since the Industrial Revolution. Governments are trying to reduce carbon-dioxide emissions. With the speed of destruction of Earth?fs ecosystem, the survival of many species, including human beings, is threatened. In order to solve this danger, we have to reduce the consumption of energy and use the alternative energy resources. If we calculate the present energy price, alternative energy must be more expensive
Solutions for Homelessness This great nation of awesome power and abundant resources is losing the battle against homelessness. The casualties can be seen on the street corners of every city in American holding an ?I will work for food? sign. Homeless shelters and rescue missions are at full capacity. There is no room at the inn for the nation?s indigent. Anyone who has studied this issue understands that homelessness is a complex problem. Communities continue to struggle with this socio-economic
Solutions to Poverty Poverty is a major problem in the United States today. Social, economical, political, and cultural factors all contribute to poverty. Education and economic development are two major issues that will help prevent poverty. The United States Census Bureau defines poverty as an "economic condition in which people lack sufficient income to obtain basic needs for food, housing, clothing, health services and education." In other words, poverty is powerlessness, a lack of representation
Finding the Water Potential of Potato Cells Aim: Our aim was to discover the water potential of potatoes cells using different concentrations of sucrose solution Science: Osmosis is 'the movement of water molecules from a region of higher water potential to a region of lower water potential through a semi-permeable membrane' www.s-cool.co.uk 'Water can move between cells (unligninified) freely as the cell walls are permeable. However its movement is controlled by a number of factors
to cut the potato I have a white tile underneath. The experiment will be a fair test as I will keep the weight of the cut potato the same throughout the water and sugar solutions. I will try to keep the potatoes surface area and volume the same. I will make sure that both pieces of potato are placed in their solutions at the same time and pulled out together. I will make the weight of the potatoes the same by using the top pan balance and keeping the weight roughly the same through out
different molar solutions of sucrose and water. Apparatus: -Cutting tile which will be used to cut the potato on. -Knife which will be used to peel the potato with and to cut to correct mass. -Burette which will be used to measure the solutions acurately. -Distilled water to make up solutions as part of the experiment sucrose to make up part of the experiment -Potatoes to cut into equal mass and observe what happens to them when left in differing concentrations of sucrose solution. -Tissue
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. The more often they collide the faster they react. This means that the rate of reaction will increase if the concentration of the reactants is increased. As shown below: Key= Sodium Thiosulphate Hydrochloric Acid Less concentrated solution More concentrated solution Independent Variable
of the Ca(OH)2 is between 1 to 1.5g per dm3. Also I am given a standard solution of 1M hydrochloric acid (HCl) which may have to be diluted to suit the measuring needs of the experiment. Apparatus: [IMAGE] * 1g of Ca(OH)2. * Pipette 25cm3 * 2 x 500cm3 beaker * Conical flask 250cm3 * Burette * White tile * Burette stand * Stand * Indicator * 300cm3 of Hydrochloric acid- standard solution (concentration of 0.05M) * Distilled water * Filter Paper * Stirring
The definition of buoyancy is “the ability or tendency to float in water, air or some other fluid”. Buoyancy It tells you about the ability of an object to float on the water or liquid. You can determine whether an object will float or sink, not by checking the relation between the weight of the water and the weight of the object. People use buoyancy all the time, it is used to create a water object. Such as boating and scuba diving. If you think about it like this when you are on the top of the
The mixed alkali effect in the glass materials has been the subject of study in the recent years. Many properties of glasses show non linear behaviour of exhibiting a minimum or maximum, as a function of alkali content, if one of the alkali ions is gradually replaced by another alkali keeping total alkali content constant. This behaviour is called mixed alkali effect. The general formula for mixed alkali oxide glass is y[x.A2O + (1-x) B2O] + (1-y) glass former, where A and B are alkalis. The extent
water as the amount of salt (NaCl) is increased. When the amount of Sodium Chloride (NaCl) is changed in a solution with water how will it affect the angle of refraction of a ray of light? Hypothesis: I think that the angle of refraction will increase as the amount of salt is increased as the liquid becomes denser and the light will slow down and refract even more. As is shown in the salt solution refractive index table by topac, the refractive index (How much the light bends) is increased very slightly
Egg Crash Project Paper The purpose of this project was to understand the forces, momentum, and energy a contraption would experience during an impact from a pendulum at 5, 10, 15, 20, and 25mph. The project was required to hold and protect 2 raw large Grade A eggs from each pendulum impact respectively. My project consisted of a simple set of materials: a 30cm by 20cm cardboard box, a toilet paper roll, industrial glue, 2 rubber bands, 4 water bottles, 2 Oreo cookie trays, packaging tape, and