Two moles of A and four moles of B are mixed together and injected into a reactor that is maintained at a pressure of 50 atmospheres and a temperature of 700k, Equilibrium for the reaction A+B--->C is quickly established, and it is found that the volume of the reactor is 5400 cm^3. Determine the equilibrium constant for the reaction, and the mole fraction of A, B, and C at equilibrium.