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QUICK AND EASY, NO COMPLICATED PROBLEM! Pennies used to be made of copper and zinc and had a mass of 3.1g. Today, pennies are made of copper-plated zinc and have a mass of 2.5g. A new penny's mass is what
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Apr 16, 2021
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QUICK AND EASY, NO COMPLICATED PROBLEM!
Pennies used to be made of copper and zinc and had a mass of 3.1g. Today, pennies are made of copper-plated zinc and have a mass of 2.5g. A new penny's mass is what percent of an old penny's mass?
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Xetorthio
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81%
Step-by-step explanation:
Flomaster
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Apr 23, 2021
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