A sample of gaseous SO3 was placed in a rigid 1.00L flask, where it decomposed at 600.00oC according to the following reaction:
SO3(g) <---> SO2(g) + 1/2O2(g)
At equilibrium the total pressure and density of the gaseous mixture were 1.80atm and 1.60g L-1, respectively. Calculate Kc and Kp.