In the following situations, what does the vessel contain – gas, liquid, solid, or a mixture of phases? If it is a two-phase mixture, what is the quality? In all cases, what is the temperature of the container?
1. A 20-liter vessel that contains 50 g of water at 10 bar.
2. A 20-liter vessel that contains 17.8 kg of water at 50 bar.
3. A 20-liter vessel that contains 200 g of water at 10 bar. Approximate answers: (1) T ? 600 ?C. (2) T ? 200 ?C. (3) T ? 200 ?C.