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A(s) --> B(g) + C(g) Initial 4mol 00 00 Change -1.2 1.2 1.2 Equilibrium 3.8 1.2 1.2 Kc = [B][C] = (1.2mol/1L)^2 = 1.44 A(s) --> B(g) + C(g) Initial 3.8 1.2 1.2 Change -x + x +x Equilibrium (3.8-x) ( 1.2+x) ( 1.2+x) Kc = (1.2+x/ 2L)^2 √1.44 =
