At a certain temperature, the following reactions have the equilibrium constants as shown  below: S(s)+O2(g)⇌SO2(g);  Kc=5×1052 2 S(s)+3O2(g)⇌2SO3(g);Kc=1029What is the equilibrium constant Kc for the reaction at the same temperature ? 2SO2(g)+O2(g)⇌2SO3(g)