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    When Walden was published during the nineteenth century, the reactions of people were exceedingly different than they are of modern society. These reactions were towards every aspect of Thoreau and altered with every change in time. The foremost reactions toward Henry David Thoreau occurred when he went to live on his own at Walden Pond. As strange as it may seem, some critics think that Thoreau’s choice to live at Walden Pond was simply because he was a hermit. However, his sheltered life was the

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    On Reactions to the L.A. Riots Out of all the opinions presented by Smith, the only one that makes sense--in a way that had it been implemented earlier the violence could possibly have been prevented--is H. Ross Perot's. But before I address why his is the best view on the matter, I will first show why the other opinions are, for each its own reasons, not good enough. Pat Buchanan's opinion was that the L.A. riots were caused by ineffective police squads. He said that they didn't know how

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    Rates of Reactions

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    Rates of Reactions Aim: I am going to investigate how the rate of the reaction between sodium thiosulphate and hydrochloric acid depends on the concentration of sodium thiosulphate. The reaction rate of a chemical reaction is the speed of production of products from reactants. Sodium thiosulphate + hydrochloric acid ==> sodium chloride + sulphur dioxide + water + sulphur Na2S2O3 (aq) + 2HCl (aq) ==> 2NaCl (aq) + SO2 (aq) + H2O (l) + S(s) The solid sulphur (S(s)) formed in

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    Introduction During chemical reactions, energy is either released or absorbed, normally as either heat or light energy. There are two types of reactions that involve heat, exothermic reactions and endothermic reactions. In an exothermic reaction heat energy is released and increases the temperature of its surroundings. Conversely in an endothermic reaction heat energy is absorbed and the surrounding temperature decreases. The measurement of change in heat is called calorimetry. The change in heat

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    The Sequence of Chemical Reactions INTRODUCTION This experiment was to recover the most amount of copper after it is subjected to a sequence of reactions. The copper is originally in solid form, but the reactions will turn it into free Cu+2 ions floating in solution. The ions will then be regrouped to form solid copper once again. During this process, however, some of the Cu+2 ions may be lost. The copper will subjected to changes in pH and heat. These steps were responsible for the breakdown

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    Rates of Reaction

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    The rate of reaction is a measure of how fast something happens. We can find the rate of reaction by measuring the change that happens in a set period of time. Introduction ------------ The rate of reaction is a measure of how fast something happens. We can find the rate of reaction by measuring the change that happens in a set period of time. Many factors can affect the rate of reaction; the concentration of the reactants is one of them. In the following experiments we will investigate how the

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    An investigation of neutralization reactions

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    An investigation of neutralization reactions Aim Question : What is the effect of changing the concentration of an alkali, on the volume of acid needed to neutralise it, when acid is added to it? The plan is to use two acids (Hydrochloric & Sulphuric) and one alkali (Sodium Hydroxide). The reason I need to use two acids is; because the question applies to all acids and alkalis and to just use one of each would not enable me to come to a general conclusion. If there had been more

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    An oxidation-reduction (redox) reaction is a chemical reaction, and it involves a transfer in electrons between two species. In chemistry, the species are referred to as a set of atoms, molecules, or ions with the same chemical formula. (Khan Academy, 2017) There are many types of reactions that include combustion, synthesis, corrosion, and respiration. The process of an oxidation-reduction reaction occurs when an element is being oxidized and reduction reaction will also occur at the same time.

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    Rates of Reaction.

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    Rates of Reaction Aim I will be investigating the rate of reaction (how quick a reaction takes) of Sodium Thiosulphate (Na2S2O3) and Hydrochloric Acid (HCl {aq}). There are different variables that can affect the rate of reaction. The different variables include Temperature, catalysts and concentration. In this piece of coursework, I'll be analysing the concentration. The products we get are Sodium Thiosulphate + Hydrochloric Acid --> Sodium Chloride + Water + Sulphur dioxide

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    Rates of Reaction

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    Rates of Reaction Planning ======== To measure the rates of reaction three variables were used. Firstly, a basic experiment was set up this was a delivery tube connecting a test tube filled with water in a bowl of water to a flask with calcium carbonate with a solution of hydrochloric acid. Various sizes of calcium carbonate was used (large, medium and powered particles) each variable was tested 4 times. As the particles and acid were mixed together the time was recorded to see how

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