How does acid precipitation affect marble and limestone buildings? Acid rain is a type of precipitation that is characterised by containing contaminating substances such as sulphuric and nitric acid‚ both of which have harmful effects on the environment. Both marble and limestone are extremely vulnerable to the damages done by acid rain due to their components. These materials contain calcite‚ a substance that easily reacts and dissolves with acid. Acid rain is the cause of the destruction of many
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Do Ads Affect Obesity ’s Rate? Name: Nejoom Taher GGU ID: 0571638 Applied Critical Thinking Research Paragraph Instructor: Natalie Barbera Summer 2013 Abstract Obesity rates have been increasing in the recent years which makes people concern about the reasons of it. Despite the fact‚ that many studies indicate there is no direct correlation between obesity and advertising‚ people continue to believe that
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a time when we are no longer young as we used to be before‚ but in fact we will start to age as the years go by. This can affect how we react to certain things and how quickly we respond. People who are older have nerve impulses that react more slowly and will have a slower reaction time than people who are younger. I think that as we grow older our reaction time does decrease. MATERIALS ruler paper/pen stopwatch chairs and a location to do this
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The first pair of plates is then placed in the refrigerator ant the time is recorded at 6:05 p.m. as the start time. The end time will be after 1 hour has elapsed. The radius of the crystal are measured and recorded for both sets of pairs. Then the rate of diffusion for each molecule is calculated by converting the radius from millimeters to micrometers and dividing the resulting number by the number of minutes the plates were sitting. * Diffusion in liquid -room temperature water -crystal
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How can we speed up the reaction between Calcium Carbonate and Hydrochloric Acid? Contents 1. Plan  Aim  Equipment  Variable Factors  Prediction  Method  Trial Run 2. Results  Results Tables 3. Analysis and Conclusions  Graphs  Conclusions 4. Evaluation  Accuracy Of Results  Reliability  Improvements  Extending the Investigation 1. Plan Aim I am doing this
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investigate the effects of temperature on the growth rate pine seedlings. Experiment 1 A batch of 60 pine seedlings (Batch I) was grown in a greenhouse under controlled temperatures. Ten plants were grown at each of six temperatures from 50 C to 300 C. These plants remained at their original temperatures 24 hours each day for two weeks. All other conditions were the same for all seedlings. The growth rates are shown in Table 1. Table 1. Growth rates for pine seedlings in Batch I Experiment II A
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Investigating the Effect of Concentration on the Rate of Enzyme Catalysed Reaction To investigate the effect of concentration on the rate of enzyme catalysed reaction I must know all the factors that affect it in order to investigate in this. Here are all the factors: Temperature- Enzyme like it warm but not too hot. Enzymes are biological catalysts‚ which speed up chemical reactions. They work most efficiently at the optimum point (37°C). If they are below 37°C they will work
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Experiment 2b: Determination of the ASA Content of Aspirin Due Date: September 16‚ 2013 Experiment#: 2b Title: Determination of the ASA Content of Aspirin Aim: To determine the Molar Concentration of NaOH and HCl acid used in their Standardization processes and to determine the acetylsalicylic acid (ASA) content in Aspirin. Materials/Apparatus: materials used are the same as that outlined in the laboratory procedure prepared by the laboratory instructor. Procedure: The procedure used
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Aim: This experiment will aim to show how the amount of substrate affects the rate of the reaction. Hypothesis: In this experiment I think the amount of substrate will simply increase the reaction. As I increase the surface area of the potato the gas given off from the reaction will increase. Therefore to sum things up‚ my hypothesis is when the Independent variable increases so will the dependant variable. Independent variable: - Surface area of potato Dependant variable: - Gas Controlled
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Biology coursework How does the temperature affect the rate of reaction? Introduction For our experiments‚ I was investigating what affects the rate of reaction. We used Hydrogen peroxide to test the rate of reaction‚ with the temperature of this being our variable that we changed. Hydrogen peroxide is a clear‚ colourless liquid which has various amounts of uses within the laboratory‚ industrial purposes and even in our households. It is mainly used for cleaning products and hair dye but is
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