Aclosed-end manometer was attached to a vessel containing argon. the difference in the mercury levels in the two arms of the manometer was 10.1 cm. atmospheric pressure was 783 mm hg. the pressure of the argon in the container was mm hg.

Asteam is contained in a rigid tank with a volume of 1 m3. initially, the pressure and temperature are 7 bar and 500 oc, respectively. the temperature drops due to cooling process. determine: (1) the temperature at which condensation begins in °c, (2) the fraction of the total mass that has condensed when the pressure decreased to 0.5 bar. (3) the volume in m3 occupied by saturated liquid at the final state?