Name: Serene Tan Subject: Chemistry SL Date: 5th December 2012 Title: The effect of concentration of electrolyte on the potential difference in voltaic cell. Aim: To investigate the effect of concentration of electrolyte of the potential difference in voltaic cell. Introduction: Chemical reactions involving the transfer of electrons from one reactant to another are called oxidation-reduction reactions or redox reactions. In a redox reaction‚ two half-reactions occur; one reactant gives
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discovered when using spectrophotometry to determine the percentage of copper in a copper-clad penny and the thicknes of the copper layer on the copper-clad penny. After 1982‚ copper coating has been used in the creation of the penny because the cost of pure copper has increase to the point that the amount needed t omake a penny cost far more than the actual value of the penny. This lab allowed us to see just how much copper coating was used in a particular penny. Not knowing the about information
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vegetables) using two strips of metal. The most readily available combination is copper and zinc. The zinc piece can be taken from the casing of an old carbon "D" cell (battery); some zinc coated nails may work as well. The copper can be a coin containing a high amount of copper. (Note: some recent copper coins‚ including the newer U.S. pennies‚ contain low amounts of copper mixed with zinc. If in doubt‚ use a pure copper strip.) They are stuck into the lemon‚ and wires are attached to each one. The
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and balance each of the following equations. A. CuSO4 + Fe Cu + FeSO4 B. 3CuSO4 + 2Fe 3Cu + Fe(SO4)3 2. If Iron (III) Sulfate were formed‚ what mass of Copper would be expected and what is the limiting reagent? C. 2.26 g Cu D. Fe 3. If Iron (II) Sulfate were formed‚ what mass of Copper would be expected and what is the limiting reagent? E. 2.8 g Cu F. CuSO4 Driving Question: What compound is formed when you add 7 g of CuSO4 to 2 g of Fe?
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University of Edinburgh Trading Silver and Copper FRM Assignment Lina LU ( s1111757) Yufei PANG ( s1145790) Jinsheng HU ( s1121232) Qi GAO ( s1150771) 2012-3-13 Contents 1. 2. 3. Introduction ................................................................................................................... 1 Market Analysis .............................................................................................................. 2 Forward curve ................................
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(NSW). From July 1998 to March 2008‚ Cadia conducted mining operations in which it recovered minerals including copper and gold‚ and paid royalties to the Minister pursuant to the Mining Act 1992 (NSW). The Minister referred to the Case of Mines[1]‚ claiming that the mine owned by Cadia was a “royal mine” containing gold that belonged to the Crown prerogative‚ and as a consequence the copper was also the property of the Crown. Cadia commenced proceedings against the State of New South Wales and the
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(around 8 cm) * A copper wire (15 cm) * Vernier Logger Pro * Magnetic Field sensor * Battery * Switch * Sand Paper Background Theory: Some metals such as nickel and iron can be magnetised using an electromagnet. The strength of the electromagnet depends on various factors which include the current‚ no. of turns per unit length and the core of the magnetised metal. In this experiment‚ I will study the effect of spacing between the turns of the copper coil wound around the
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passed through them. For electrolysis to work‚ the ions must be free to move. Ions are free to move when an ionic substance is dissolved in water or molten (melted). For example‚ if electricity is passed through copper chloride solution‚ the copper chloride is broken down to form copper metal and chlorine gas. Here is what happens during electrolysis: Positively charged ions move to the negative electrode during electrolysis. They receive electrons and are reduced. Negatively charged ions move
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skills. The aluminum foil was found to rust in the water containing the dissolved Copper Chloride (CuCl₂) crystals. The results of the experiments were determined through close examination and observation of both qualitative and quantitative elements of the changes that occurred when a blue crystal‚ Copper Chloride‚ reacted with aluminum foil. In conclusion‚ aluminum foil is turned into copper when in contact with Copper Chloride (CuCl₂) granules. Group Members and Contributions: Priyanka Potdar
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1. Definition of the Inventory Theory Inventory theory (or more formally the mathematical theory of inventory and production) is the sub-specialty within operations research that is concerned with the design of production/inventory systems to minimize costs. It studies the decisions faced by firms and the military in connection with manufacturing‚ warehousing‚ supply chains‚ spare part allocation and so on; it provides the mathematical foundation for logistics. Inventories are materials stored
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