| 121. | Y11 GCSE Chemistry CourseworkRates of Reaction
I will be investigating how changing the length of magnesium ribbon affects its rate of reaction with hydrochloric acid. Equation: Mg (s) +2 HCl (aq) MgCl2 (aq) + H2 (g) Prediction: I predict that as the length of magnesium ribbon (surface area) is increased, the rate of the reaction will increase. ...
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| 122. | Surface area to volume ratio experiment
Surface area and volume ratio
Theory: In this experiment the size and shape of some cells is modelled using agar gel. ...
Aim: To investigate the relationship between the surface area to volume ratio and rate of diffusion, using a model.
Hypothesis: That the larger the surface area to volu...
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| 123. | BMW of North America Inc v Gore 116 S Ct 1589 1996
BMW of North America, Inc. v. Gore, 116 S.Ct. 1589 (1996)
Statement of Case
On 1996, a BMW purchaser sued after discovering that his new BMW had been repainted prior to sale, alleging that the failure to disclosure the repainting constituted fraud under Alabama law. ... BMW appeals ...
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| 124. | Who Steals my purse
Who Steals my purse steals trash was a great speech. I met John Wayne and Jesus when I was just a kid They both had on their cowboy hats just like I pictured them I stood up at the front of the class waving my American flag Saying the pledge, sang amber waves of grain I sing all the songs of America...
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| 125. | the pendulum
THE I am going to investigate the effect of varying the concentration of Sodium Thiosulphate solution in a reaction with Hydrochloric Acid. The theory behind this experiment is that 'Increasing the concentration can increase the rate of the reaction by increasing the rate of molecular collisions.' I...
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| 126. | Investigating the Rate of Reaction between Sodium Thiosulphate and Hydrochloric Acid
Investigating the Rate of Reaction between Sodium Thiosulphate and Hydrochloric Acid
Hypothesis:
I believe that the resulting graph will like this:
? ... I believe that as the temperature increases the rate of reaction will also increase this coincides with the collision theory which s...
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| 127. | Determination of the solubility of Calcium Hydroxide
Plan The aim of this experiment is to find the concentration of calcium hydroxide (approximately 0.015 mol dm ) in a sample of lime water solution. I am required to design my own experiment and choose from a range of appropriate equipment and apparatus. Methyl orange will be used as an indicator. I ...
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| 128. | Finding out how much acid there is in a solution
...
The two formulas that are needed to find out the concentration of a solution are -
Moles = Mass/Relative Formula Mass
+
Concentration (mol dm-3 ) = Mass/Relative Formula Mass
The concentration will be measured in mol dm-3, therefore in order to use the formulas above, we will have to...
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| 129. | Effect of concentration changes on the rate of a chemical reaction
... )
sodium thiosulphate
hydrochloric acid(dilute)
Make up about 200ml of a dilute sodium thiosulphate solution by adding 8g of sodium thiosulphate to 200ml of water (concentration = 4%). ...
Calculate the concentration!
How to calculate the new concentration:
40 ml ˇP 4 % = 60 ml ...
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| 130. | Macroscale dehydration of 2 methyl 2 butanol
Introduction:
2-Methyl-2-butanol was dehydrated under acid-catalyzed conditions to afford 2-Methyl-1-butene and 2-Methyl-2-butene, which was isolated via fractional distillation. ... Sulfuric acid (9ml) was slowly added and the mixture was swirled for approximately 2 min, while adding 18ml (0.16...
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| 131. | How Concentration Affects the Rate of Reaction
Aim: - To investigate how concentration affects the rate of reaction using Sodium Thiosulphate and Hydrochloric Acid. ... The Reaction will be :
hydrochloric acid+ sodium thiosulphate sodium chloride +sulphur dioxide +sulphur +water.
HCl(aq) + Na2S2O3(aq) NaCl(aq) + SO2(g)...
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| 132. | Trans Fatty Acoids
INTRODUCTION;
Trans fatty acids are monounsaturated fatty acids which like cis monounsaturated fatty acids they have 18 carbons and 1 double bond. The most common trans isomer is elaidic acid, which has its double bonds in the w-9 position. Other trans isomers also occur, which have their double bo...
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| 133. | clouds
... There are many types of clouds, all with different characteristics, meanings and purposes. ... Some clouds are accompanied by precipitation: rain, snow, hail, sleet, even freezing rain. ... Clouds are usually the most obvious feature of the sky. ...
Cirrus is one of the many types of clou...
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| 134. | Gas Law
Gas Law - Stoichiometry Lab Bonnie Laurich Purpose: By adding two different chemicals together you come out with a product. At times that process calls for converting as well as predicting. In class, we have learned that when two chemicals are added to one another you can predict their products. Tod...
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| 135. | Fermentation
... During fermentation, the cell extracts some oxidation energy from the organic compound and excretes one or more products as a way of disposing of the electrons derived from substrate oxidation. ...
Typical examples of fermentation products are CO2 (leavening of bread), ethanol (beer and win...
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| 136. | biochemical tests
TSIA: Triple-sugar iron agar TSI contains three sugars, lactose, saccharose (sucrose), and a very small amount (0.1%) of glucose (dextrose). It also contains the pH indicator, phenol red. To do the experiment, the slants with a pure culture were incubated by stabbing deep into the butt, at 37¨¬C for...
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| 137. | Media coursework
MEDIA COURSEWORK Rain Man-Good Film for Leisure……Bad Film for Research So you want to learn about Autism, well my advice is to read a book. Is it possible to have a relationship wit an autistic person? This is like saying, that you have a relationship with your pet at home but you don’t know what th...
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| 138. | EFFECTS OF GIBBERELLIC ACID ON WILD TYPE AND ROSETTE PLANTS OF THE SPECIES Brassica rapa
INTRODUCTION
Brassica rapa is an extremely fast growing and rapid cycling plant. Its average life of 35 days makes it an excellent test specimen on which to test the effects of chemicals. This study tests the effects of the growth hormone gibberellic acid (GA) on the wild type and rosette type of B...
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| 139. | Investigating how reaction times are effected by the concentration of Hydrochloric Acid in a reaction between
Aim:
Design and carry out an experiment to investigate the effect of the concentration of hydrochloric acid on a reaction between sodium thiosulphate and hydrochloric acid.
Hypothesis:
As the concentrate on of the acid increases, the time taken for a reaction to occur with sodium thiosulphate...
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| 140. | Woodstock
Woodstock and The Beetles
The music and arts festival Woodstock will be forever remembered as one of the craziest events to ever happen in American History. ... Many historians have argued about Woodstock’s significants in American History. Some call Woodstock “the capstone of an era devoted ...
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