Arigid tank 0.03 m3 in volume is evacuated to very low pressure and placed in a low-temperature bath at 244 k. a quantity of 0.05 g of pure solid water (ice) is placed inside the tank. at 244 k, the entropy change between saturated water vapor and ice is 11.62 j/g/k and reported vapor pressure of ice is 42.8 n/m2. (a) calculate u, ts, a, and q for the process of ice evaporation (sublimation). what fraction of ice has evaporated at equilibrium? (b) what conclusions can you reach about the general equilibrium criterion in this case?