An unsaturated parcel of air at the surface records a temperature of 27 ℃celsius. The parcel of air is raised to a new height of 5,000 meters and along its path reaches its Lifted Condensation Level at 2,000 meters. What do we expect the air parcel temperature (in Celsius) to be at the following heights

Arigid tank is divided into two equal parts by a partition. one part of the tank contains 3 kg of compressed liquid water at 400 kpa and 60°c while the other part is evacuated. the partition is now removed, and the water expands to fill the entire tank. determine the entropy change of water during this process, if the final pressure in the tank is 40 kpa. use steam tables.