Asked by micay
Brass is an alloy that is approximately 67% Cu and 33% Zn, by mass. How many grams of Cu are in a brass door knocker weighing 2.2 pounds? (1 lb = 453.6 g)
Answers
Answered by
oobleck
.67 * 2.2 lb * 453.6g/lb = ____ g
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