Carbon dioxide diffuses through nitrogen in one direction at one atmosphere and $273K.$ The mole fraction of $C{O}_2$ at point $1$ is $0\mathrm{.}45$ and at point $2$ it is $0\mathrm{.}032$ when the distance between the points is $4\mathrm{.}1m$ in the direction of diffusion. Diffusivity of carbon dioxide through nitrogen is $0\mathrm{.}245\frac{cm}{s}.$ The gas phase as a whole is stationary but $C{O}_2$ and $N_2$ flow in opposite direction at the same rate. What is the molar flux of carbon dioxide?