Steam is contained in a closed rigid container with a volume of 1 m3. initially, the pressure and temperature of the steam are 7 bar and 500 degree c, respectively. the temperature drops as a result of heat transfer to the surroundings. determine the temperature at which condensation first occurs, in degree c, and the fraction of the total mass that has condensed when the pressure reaches 0.5 bar. what is the volume, in m3, occupied by saturated liquid at the final state?