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Experiment #4 - Copper Cycle Chemistry 111 Jessica Murphy...

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Copper Cycle Chemistry 111 Jessica Murphy Spring 2008 Introduction Copper is abundant throughout the world, and is also considered a highly important element. It is found in deposits, native ore, mixed with other elements, and in rock. Copper is also an important part of the world’s economic production, it is used in the electrical industry and in commercial industry. Copper is also v ital for the production of connective tissue, nerve coverings, and bones in humans. Though it is essential, high levels of copper is considered toxic. As for the environment, copper is considered a widespread pollutant since it easily gets into the soil from companies and accumulates having unfavorable effects on plants. In this experiment we will watch copper go through a cycle and return to regular state, showing mass conservation. Materials and Methods Starting off, a fume hood was assembled using a funnel, rubber tubing and aspirator. A 50ml beaker was placed in the ring under the fume hood. In Trial #2, 250 mg of copper turnings were heated with 5mL of 6M HNO3, and the results were recorded. In Trial #3,
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