A sample of SO3 decomposes according to the following equation 2SO3(g) ----2SO2(g)+1O2(g) An equilibrium mixture in a 8-L vessel at 621 degrees C, contains 0.0319g of SO3, 0.0436g of SO2, and 0.0312g of O2. (a) Calculate Kp for this reaction at this temperature     (b) What is the total pressure exerted by the equilibrium mixture of gases

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