A closed rigid container is filled with 1.5 kg water at 100 kPa, 55◦C; 1 kg of stainless steel, and 0.5 kg of polyvinyl chloride, both at 20◦C, and 0.1 kg air at 400 K, 100 kPa. It is now left alone, with no external heat transfer, and no water vaporizes. Find the final temperature and air pressure.