Air containing 20.0mole% water vapor at an initial pressure of 1 atm absolute is cooled in a 1-l sealed vessel from 200°c to 15°c. a)what is the pressure in the vessel at the end of the process? (hint: the partial pressure of air in the system can be determined from the expression pair = nairrt/v.) b)what is the mole fraction of water in the gas phase at the end of the process? c)how much water (grams) is condensed?

For each of the following process: a) sketch the p-v diagram, b)sketch t-s diagram, c) sketch t-v diagram, d) sketch the boundary work on one of the diagrams (a, b or c) and e) sketch the reversible heat transfer on one of the diagrams (a, b or c): 1- isobaric process from compressed liquid to superheated vapor 2- isothermal process from compressed liquid to superheated vapor 3- isentropic process from compressed liquid to superheated vapor