A mixture of 0.0080 mol of SO2 (g) and 0.0056 mol O2 (g) is placed in a 1.0 –liter container. When equilibrium is established, 0.0040 mol of SO3 (g) is present. SO2 (g) + O2 (g) ⇆ SO3 (g) a) What are the equilibrium concentrations of SO2 (g) and O2 (g) ? b) What is the Kc value?

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