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at equilibrium in a 10L vessel, there are 7.60x10^-2 moles of SOx, 8.60x10^-2 moles of O2,...

at equilibrium in a 10L vessel, there are 7.60x10^-2 moles of SOx, 8.60x10^-2 moles of O2, and 8.20x10^-2 moles of SO3. What is the equilibrium constant Kc under these conditions for the following reaction?

2SO2 (g) + O2 -> 2SO3 (g)

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