HCl gas diffuses through a $0\mathrm{.}1$ inch thick air film at $20\backslash$deg C$.$ HCl on one side of the film

Its partial pressure is $0\mathrm{.}08$ atm and zero on the other side. Diffusion of HCl in air at $20\backslash$deg C and $1$ atm

$0\mathrm{.}145$ cm$2$

s

$-$one

whereas;

$($a$)$ Total pressure $10$ atm,

$($b$)$ Total pressure $1$ atm,

$($c$)$ Diffusion rate mol HCl s for total pressure $0\mathrm{.}1$ atm

Calculate in terms of $-1$ cm$-2.$