Changing the Rate of Reaction PART 1: PARTICLE SIZE Question: How does changing the particle size of marble (CaCO3) affect the rate of reaction when it is added to hydrochloric acid (HCl)? Hypothesis: If I change the particle size of marble to test how to change the rate of a chemical reaction‚ than the chemical reaction with the smallest marble particles will produce CO2 the quickest because the larger the surface area‚ the more place the hydrochloric acid will have to collide with the marble
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this experiment I will investigate the relationship between the concentration of the hydrochloric acid and the rate of a reaction. To find this out I will react different concentration of hydrochloric acid and magnesium‚ from there I will monitor the gas (hydrogen) produced and analyse the results. Prediction: I predict the higher the molarity of the hydrochloric acid the faster the rate of reaction therefore the quicker the gas will be produced in the specific time interval. Overview of the
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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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China ’s Exchange Rate Peg concerning Trade Policy with U.S. Overview of the Problem The U.S. and China trade imbalance continue to be on the rise. U.S. manufacturing firms and workers voiced complaints over the competitive challenges posed by cheap Chinese imports. China ’s trade policy of pegging its currency‚ the yuan‚ to the U.S. dollar has enabled an unfair trade advantage according to the U.S. Some have gone as far as calling it "currency manipulation." The outcome has been loss of
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depreciates against the Japanese yen. The change in exchange rate a) Can have a significant economic consequences for U.S. firms. b) Can have a significant economic consequences for Japanese firms. c) Can have a significant economic consequences for both U.S. and Japanese firms. d) None of the above Answer: c) 2. Suppose the U.S. dollar substantially depreciates against the Japanese yen. The change in exchange rate a) Will tend to weaken the competitive position of import-competing
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The Australian Exchange Rate By: Dontae Smith Introduction: What factors affect the demand and supply of Australian dollars in the foreign exchange markets? Distinguish between the possible causes and effects of currency depreciation and a currency appreciation on the Australian economy. What forces have come into play‚ if any‚ in the past four months that have affected the value of the Australian dollar? Exchange Rate: "The rate at which one unit of domestic currency is exchanged for a given
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INTRODUCTION An exchange rate is the price at which one country’s currency must pay in order to buy one unit of another county’s currency on the foreign exchange market. The concept of exchange rate mechanism may be explained as the technique employed by the governments in order to manage and control their respective currencies in the context of the other major currencies of the world. There are 5 exchange rate mechanisms established which each of it is meant to be followed by government regarding
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Flow Method (DCF) for instance‚ Free Cash Flow to Equity (FCFE)‚ Free Cash Flow to Firm (FCFF)‚ and Dividend Discount Model‚ and the Relative Valuation Techniques‚ for instance Price Earnings Ratio (P/E) and Price Book Value Ratio (P/BV). Dividend Discount Model requires input of next year’s expected dividend distributed‚ a required rate of return by shareholders and an estimation of growth rate. Since JetBlue does not pay out dividend before listed (despite dividend distributed to preferred shares shareholders)
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1. Introduction: This investigation will show the effect of temperature on the rate of reaction. The Berocca tablet was reacted with hot water (47oC) and then with cold water (20oC). In the hypothesis‚ it was predicted that the temperature will be inverse proportional to the time Berocca tablet reacts with water to produce 50ml of carbon dioxide gas. Through the result table‚ we can see that the hypothesis is supported and it was correct. In the conclusion‚ it was shown that the temperature has the
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Reaction Rate Coursework Aim To see how the concentration of a reactant affects the rate of reaction‚ in this case sodium thiosulphate and acid. Scientific Background For a reaction to occur‚ the particles of the reactants must be colliding with each other with enough energy‚ the amount of energy needed for the reaction is called activation energy. Activation energy is altered by temperature‚ concentration‚ surface area of and the pressure on the reactants. Stirring the reactants also increases
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