Chemistry, 22.01.2021 04:40 adriana145
(optional) You are given nine pennies. One penny was minted in 1980 and the other eight pennies were minted after 1982. The 1980 penny weighs 3.0 grams; the other pennies have copper and weigh only 2.5 grams. Assuming the mint dates are illegible, devise a method usin the balance shown to determine the heavier 1980 penny in only two trials. 3. less
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(optional) You are given nine pennies. One penny was minted in 1980 and the other eight pennies were...
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