Qualitatively plot the following processes on P-v, T-v, and P-T diagrams. Use an "arrow" sign pointing to the process direction. The vapor dome should be included in the diagram, if possible. Then draw the process from the initial state to the final state. (a) Superheated vapor is cooled at constant pressure until liquid is about to form. (b) A liquid-vapor mixture with a quality equal to 0.7 or 70% is heated under a constant volume process until its quality is 100%. (c) A liquid-vapor mixture of water with a quality of 50% is heated at a constant temperature of 200 C until its volume is 5 times the initial volume. (d) Ammonia at 20 C is a saturated liquid. It is heated at constant pressure until its specific internal energy is 4 times of its initial value.