Problem $1\mathrm{.}1$

Ammonia gas $(A)$ is diffusing through a uniform tube $0\mathrm{.}10m$ long containing $N_2$ gas $($B$)$ at $1\mathrm{.}0132{10}^{5}Pa$ and $298K.$ The diagram is similar to the figure below. At point $1,P{a}_1=1\mathrm{.}103{10}^{4}Pa$ and at point $2,P{a}_2=0\mathrm{.}507{10}^{4}Pa.$ The diffusivity is $0\mathrm{.}23{10}^{-4}\frac{m^2}{s}.$ Calculate the flux of the ammonia