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Consider the following reactions and their equilibrium constants at 300, K. PCI5(g) - 1/4 P4(g) + 5/2 Cl2(g); Kc = 2.10.10-22 1/4 P4(g) + 3/2 C12(g) - PC13(9); Kc = 9.33.1026 Calculate Kc for PCI5(g) PCI3(g) + Cl2(g) at the same temperature.