The container of Fig. 3.45 is separated into two parts by a partition. The container is insulated

Question:

The container of Fig. 3.45 is separated into two parts by a partition. The container is insulated so that no heat can be transferred in or out. If the partition is suddenly removed, determine the final pressure, temperature, and volume of the container if one part contains 10 kg of air at 500 kPa and 100°C, while the other part holds 15 kg of air at 800 kPa and 80°C. Assume constant specific heats.
Figure 3.45