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Chemistry
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12 Dec 2019

A 2010 penny has a mass of 2.541 g and produces a copper shell with a mass of 0.064 g. Find the percent of Cu and Zn in the penny.

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Nelly Stracke
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13 Dec 2019

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Related questions

A new penny having a mass of 2.5133 g is dissolved in nitric acidand the resulting copper ions are plated out onto a platinumcathode that has a mass of 12.0476 g. After all the copper ionshave been reduced, the measured mass at the cathode is 12.1454 g.There is no increase in mass at the anode (meaning no Pb insolution to be deposited).
What is the percent copper of the penny? (the rest is Zn, whichdoes not plate out under these conditions and remains in solution).

A copper penny has a mass of 3.1 g and a volume of .35 cm3. What is the density of copper?

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