Question $10$

Two tanks are connected by a tube, $0\mathrm{.}01m$ diameter and $5m$ long. One tank contains nitrogen $(A)$ and the other has carbon dioxide $($B$).$ The pressure and temperature are maintained @ $200$kPa and $25C.$ At some initial time, $t=0,$ convective mass transfer occurs between the two tanks. Considering that the molar fraction of nitrogen at the end and beginning of the tube are $0\mathrm{.}1$ and $0\mathrm{.}7,$ respectively, and also $N_B=0.$ The flux rate $(\frac{\text{m}\text{o}\text{l}}{m^{2}s})$ of nitrogen is:

Hit: Use one of the following constants:

$F=2\mathrm{.}589(\frac{\text{m}\text{o}\text{l}}{m^2}(s))$

$k_y=3\mathrm{.}74(\frac{\text{m}\text{o}\text{l}}{m^2}(s))$

$=4\mathrm{.}74(\frac{\text{m}\text{o}\text{l}}{m^2}(s))$