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Zn^2+ = 16,25/65 mol = 0,25 mol = 2F note: 2F diketahui karena 2+
CuSO4 diurai menjadi Cu^2+ + SO4^2-
Cu^2+ juga 2F maka 0,25 mol juga
n = gr/Mr
0,25 = gr/60
gr = 0,25 x 63,5 = 15,875 gram = 15,88 gram