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mol Ni(C4H7N2O2)2 = 0,144 gr / 288 gr/mol = 0,0005 mol
mol Ni(NO3)2 = mol Ni(C4H7N2O2)2 (koefisien sama) = 0,0005 mol
pada reaksi 1:
mol Ni(NO3)2 = 0,0005 mol
mol NiS = mol Ni(NO3)2 (koefisien sama) = 0,0005 mol
massa NiS = 0,0005 mol x 90 gr/mol = 0,045 gr
% NiS = 0,045 gr / 0,450 gr x 100% = 10,00%