The heat liberated on complete combustion of 7.8 g benzene is 327 kj. This heat has been measured at constant volume and pressure and at 27* C.Calculate the heat of combustion.at constant pressure

In the reaction A + 2B ⇌ 2C, if 2 moles of A, 3 moles of B and 2 moles of C are placed in a 2 L flask and
the equilibrium concentration of C is 0.5 mol/L. The equilibrium constant (KC) for the reaction is.....and please tell how you know that the reaction is going forward .. imean how to calculate the reaction quotient ???