A rigid insulated tank is divided into two compartments by a partition. Initially 0.02 kmole of N2 fills one compartment at 2 bars and 100 C. The other compartment contains 0.03 kmole of CO2 at 1 bar and 20 C. The partition is removed and the gases mix. Determine the final pressure and temperature of the mixture and the entropy change for the mixing process. Assume constant specific heats where cvN2 = 0.744 kJ/(kg-K); cv Co2 = 0.68 kJ/(kg-K)