In 1982 the U.S. Mint began to cast penny coins made of zinc plated with copper. If
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In 1982 the U.S. Mint began to cast penny coins made of zinc plated with copper. If a 1990 penny has a mass of 2.554 g and contains 2.490 g zinc, what is the percent copper in the coin?
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Related Book For 
Introductory Chemistry Concepts And Critical Thinking
ISBN: 9780321804907
7th Edition
Authors: Charles Corwin
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