For each reaction, write the equilibrium expression, Kc. A) 2KI(aq) + Pb(NO3)2(aq) ⇄ PbI2(s) + 2KNO3(aq) B) N2O(g) + 2H2O(g) ⇄ NH4NO3 (s) C) Fe2O3 (s) + 3CO(g) ⇄ 2Fe(s) + 3CO2 (g)

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