79. Find the mass percent ofCuSO4, in a solution whose density is 1.30 g/mL and whose molarity is 1.22 M. (The atomic mass of Cu is 63.55.)
(A) 22.1%
(B) 31.6%
(C) 15.0%
(D) 12.4%
(E) none of these

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統計: A(2), B(2), C(9), D(2), E(2) #1121934

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1.3*1000*X          ...
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