Sterling silver contains 925 parts silver and 75 parts copper by mass.What is the percent copper in sterling silver in the sample?

Name: Sterling silver contains 925 parts silver and 75 parts copper by mass.What is the percent copper in sterling silver in the sample?
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Question

Quizplus · Accepted Answer

The percent copper in sterling silver is calculated by dividing the mass of copper (75 parts) by the total mass (925 parts silver + 75 parts copper = 1000 parts) and then multiplying by 100. This gives (75/1000) * 100 = 7.5%.

Sterling Silver Contains 925 Parts Silver and 75 Parts Copper