A solvent recovery system delivers gas saturated with benzene vapor which analyses on a benzene-free basis 15% CO2, 4% O2 and 81% N2. This gas is at 21.1oC and 750 mm Hg pressure. It is compressed to 5 atmosphere and cooled to the same temperature after compression. How many kg of benzene are condensed by this process per 1000 m3 of the original mixture if the vapor pressure of at 21.1oC is 75 mm Hg?