Experiment 3 - Experiment #2A Simulation of the Cycle of...

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Experiment #2—A Simulation of the Cycle of Copper in an ecosystem beginning and finishing with copper Chemistry 111-524 *Marta Mattioli, and Rebecca Hernandez February16th 2010 Introduction: Copper has been used for many different things throughout the world, from pots to fungicide, however, copper has also become a pollutant. Through this experiment of the copper cycle one can learn how copper reacts with other materials and can perform a series of reactions in a lab that could also occur in a natural environment. One can explore the cycle of copper from starting with copper to recovering copper thus creating a better understanding of how copper is found in the environment. Materials and Methods: For the first step in the cycle about 250mg of copper was mixed with 5mL of 6M HNO 3 and heated with low heat using a hotplate until the copper was dissolved. As the copper was heated an aspirator was used a fume hood above the beaker to keep toxic gases from being released into the air. For the second step in the cycle the aspirator was removed and 10mL of distilled water was added then 6M NaOH was added dropwise until the red litmus paper turned blue with a drop
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Experiment 3 - Experiment #2A Simulation of the Cycle of...

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