Chemistry, 17.03.2021 23:40, kelli151

In 1982, the composition of a penny changed from 95% copper and 5% zinc to 95% zinc and 5% copper. Compare the relative densities of a penny that was made in 1981 to a penny made in 1995.

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In 1982, the composition of a penny changed from 95% copper and 5% zinc to 95% zinc and 5% copper. C...