Consider a 31.0 L sample of moist air at 60.°C and one atm in which the partial pressure of water vapor is 0.131 atm. Assume that dry air has the composition 78.0 mole percent N₂, 21.0 mole percent O₂, and 1.00 mole percent Ar.

a. What are the mole percentages of each of the gases in the sample?

b. The percent relative humidity is defined as %RH = PH₂O/P^∗H₂O where PH₂O is the partial pressure of water in the sample and P^∗H₂O = 0.197 atm is the equilibrium vapor pressure of water at 60.°C. The gas is compressed at 60.°C until the relative humidity is 100.%. What volume does the mixture contain now?

c. What fraction of the water will be condensed if the total pressure of the mixture is isothermally increased to 81.0 atm?