Jawabanmu

2014-04-19T00:46:14+07:00
A. Dik : biloks Cu = X , S = -2 (2 atom Cu ) x (X) = 2X (1 atom S ) x (-2) = -2 jumlah atom = 0 jadi 2X - 2 = 0 maka 2x = 2 dan X = 2/2 =1 jadi biloks Cu2S = 1 B. Dik : biloks Cu = X , S = -2 (1 atom Cu ) x (x) = x (1 atom S ) x (-2) = -2 jumlah atom = 0 jadi X - 2 = 0 maka X = 2 C. dik : Fe = X , S = -2 , O = -2 (2 atom Fe ) x (X) = 2X (3 atom S ) x (-2) = -6 (12 atom O ) x (-2) = -24 jumlah biloks = 0 jadi 2X - 6 - 24 = 0 maka 2X = 30 dan X = 30/2 = 15 jawaban singkat A. biloksnya 1 B. biloksnya 2 C. biloksnya 15