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April 20, 2014

Homework Help: Chemistry 219

Posted by Anonymous on Tuesday, February 8, 2011 at 11:53pm.

An amount of 1.250g of an alloy (90% Ag, 10% Cu) was treated with HNO3 and H2SO4 to form Ag2SO4 and CuSO4. The solution was then treated with Cu wire to precipitate silver. The resulting solution was treated with excess zinc to precipitate copper. (show formula)
a). What mass of copper will be precipitated?
b). what total mass of zinc will be dissolved (neglect any dissolved by excess H2SO4)? Avoid any unnecessary steps in solving this problem.

thank you!!

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