A sample of SO3 decomposes according to the following equation: 2 SO3(g) 2 SO2(g) + 1 O2(g) An equilibrium mixture in a 5-L vessel at 562 oC, contains 0.0364 g of SO3, 0.0394 g of SO2, and 0.00509 g of O2.

(a) Calculate KP for this reaction at this temperature.

KP = .

(b) What is the total pressure exerted by the equilibrium mixture of gases?

Ptotal =