Rettet unser Schweizer Gold Eine ökonomische Analyse der Goldinitiative Seminararbeit Institutsdirektor: | Prof. Dr. Aymo Brunetti | Betreuender Assistent: | Konstantin Büchel, M Sc Economics | | | Verfasser: | Lorenz Zuber | | Bern | | Matrikelnummer: 10-101-574 | | Sonnenrain 40 | | 3065 Bolligen | | E-Mail lorenz.zuber@students.unibe.ch | | | | Bern, 16.11.2014 | I. Inhaltsverzeichnis I. Inhaltsverzeichnis I II. Executive Summary 3 1. Einleitung
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Introduction: This report will talk about the experiment that was conducted to see what percent of hydrogen peroxide had the greatest reaction with the potato cube. The enzyme in this experiment was catalase, which could be found inside of the potato cube. The substrate was the hydrogen peroxide. The role of the potato cube was to react with the hydrogen peroxide causing it to break down at a quicker rate which released oxygen (O₂). Three factors that could influence the enzyme’s activity is the
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example, when you buy bananas and cut them at home and walk away and ten minutes later they have started to turn brown on the edges. The name for that reaction is catechol oxidase, which is made into the pigment called benzoquinone. In this experiment I will investigate catechol oxidase. The enzyme is a catalyst which makes some chemical reactions occur faster than if no enzyme was present. I will test how well catechol oxidase will function under different conditions, what happens in different
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Glucose and the Oxygen is used up? The reaction is very slow and needs a catalyst, Potassium Hydroxide, to accelerate the reaction. In addition, the rate equation for this reaction is a forward rate. Furthermore, the reaction can be monitored by the change in color of Methylene Blue, it is blue in the presence of oxygen and colorless in the absence of oxygen. Hypothesis: The rate will reach completion in a closed system by speeding up the reaction, using a catalyst, Potassium Hydroxide, while
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Maybe you’re going to a party or maybe you have a date. Whatever the reason, women tend to pile tons of make up on their without knowing the chemistry behind it all. What exactly is chemistry? Chemistry is the science that systematically studies the composition, properties, and activities of organ and inorganic substances and various elementary forms of matter. So what chemistry is used in the process of developing the products that enhance our beauty? Mascara, it’s the most basic, yet need-to-have
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which allow chemical reactions to occur under cellular conditions (PennState University, 2017). Cells contain thousands of different enzymes, and their activities determine which chemical reactions actually take place within the cell. Cooper G.M. (2000) stated that without enzymatic catalysts, most chemical reactions are so slow that they would not occur, as enzymes accelerate the rates of such reactions by over a million-fold. Freeman, S. (2006) illustrated that chemical reactions require an input of
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Today I met with Mr. Schwinnen during opt-out and after school to start my chemical testing for Trial 2. My goal was to finish all of the testing within two hours, but that did not happen. When I started, Mr. Schwinnen showed me a new YSI 9300 Photometer that he order before the new school year. He wanted me to use it to make sure that it worked. I started crushing the nitrogen tablets and putting them into test tubes of my water samples, but when I put the samples into the photometer, it would not
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performing any chemical reaction, there is always a pre-determined number of reactants and the how much of each reactant will be a part of the reaction. Before the reaction has even begun, it is possible to determine what will be the limiting reactant, excess reactant, and the theoretical yield of the experiment. This is the process of stoichiometry. “Stoichiometry deals with calculations about the masses (sometimes volumes) of reactants and products involved in a chemical reaction.” (ChemTeam: Stoichiometry
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During these two labs we explored nucleophilic substitution and dehydrohalogenation reactions. The experiment of the first lab was a nucleophilic substitution. We reacted 10ml of t-amyl alcohol with 11ml of hydrobromic acid in a test tube to produce 2-bromo-2-methylbutane and water. To get just the organic compound from this SN1 reaction, we placed the test tube into a hot water bath. The change in temperature creates two visible layer in which the upper, with a yellowish color, contain the organic
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Chemical Reaction A chemical reaction is a change of a substance into a new substance that has a different chemical identity. A chemical reaction occurs with physical effects, like the emission of heat and light, the release of gas, the change in color, or the presents of precipitate. There are several different types of chemical reactions, such as synthesis reaction, decomposition reaction, single displacement reaction, the double displacement reaction, combustion reaction, and the acid-base reaction
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