Question $4$:

A gas mixture at a total pressure of $0\mathrm{.}10$ atm abs and $298K$ is composed of $)=(44)$ and $)=(28.$ The mixture is diffusing through an open capillary $0\mathrm{.}010m$ long having a diameter of $5{10}^{-8}m.$ The mole fraction of $C{O}_2$ at one end is $x_{A1}=0\mathrm{.}8$ and at the other end is $x_{A2}=0\mathrm{.}2.$ See Table $18\mathrm{.}2-1$ for molecular diffusion coefficients. Calculate the flux $N_A$ at steady state using equation $19\mathrm{.}4-12.$