$C{O}_2$ gas diffuses through a gas mixture under steady conditions. The

mixture contains $18\%C{O}_2,35\%N_2,47\%CO$ at $300K95$kPa. The film

thickness is $3mm.$ Partial pressure of $C{O}_{2}14$kPa and $5\mathrm{.}5$kPa at two ends.

Calculate the rate of $C{O}_2$ between two ends.

$($The diffusivity of $C{O}_2$ through $N_2$ and $CO$ is $12\mathrm{.}5{10}^{-5}\frac{m^2}{s}$ and $4\mathrm{.}8{10}^{-5}$

$\frac{m^2}{s}$ respectively. $)$