<PRE><B>Question 754522</B>
Total quantity of a mixture of copper and zinc = 2.554g
Quantity of zinc = 2.490g
Find out % of copper in the mixture
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Quantity of copper: 2.554-2.490 = 0.0640
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Percent of copper: 0.0640/2.554 = 0.0251 = 2.51%
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cheers,
Stan H.
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