The mass of copper in the final alloy is 200 x .45 + 120 x .75 = 180 g.
The total mass is 200 + 120 = 320 g.
Thus the percent copper in the final alloy is (180/320) x 100 = 56.25 %
Chance K.
asked • 11/09/14mixture of metals
An alloy is a mixture of metals. Suppose that a certain alloy is made by mixing 200 grams of an alloy containing
45% copper with 120 grams of an alloy containing 75% copper.
45% copper with 120 grams of an alloy containing 75% copper.
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