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If a five-cent coin is made of 25% copper and 75% Nickel, determine the mass of Nickel and Copper in the coin.

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Answer:

3.75g of Ni and 1.25g of Cu

Explanation:

The five-cent coin of Unit States has a mass of 5.000g. To find the mass of each atom we have to multiply the total mass times the percentage of each atom (Nickel and Copper). That is:

Mass Nickel:

5.000g * 75% = 3.75g of Ni

Mass Copper:

5.000g * 25% = 1.25g of Cu

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