The saturated vapour pressure of water in mm Hg $($p$*)$ at T $\backslash$deg C is given

by:

log$10($p$)=8\mathrm{.}1081750\mathrm{.}29/$ T $+235$

Humid air at $58\backslash$deg C$,$ a total pressure of $1$ atm and with a relative humidity of $66\%$ is passed through a condenser and cooled to $21\backslash$deg C$.$ Calculate the quantity of water condensed per kmol of humid air.