Diffusion of $C{O}_2$ through Rubber: A flat plug $30mm$ thick having an area of $4\mathrm{.}0{10}^{-4}{m}^2$ and made of vulcanized rubber is used for closing an opening in a container. The gas $C{O}_2$ at $25C$ and $2\mathrm{.}0$atm pressure is inside the container. Calculate the total leakage or diffusion of $C{O}_2$ through the plug to the outside in kgmolC$\frac{O_2}{s}$ at steady state. Assume that the partial pressure of $C{O}_2$ outside is zero. The solubility of the $C{O}_2$ gas is $0\mathrm{.}90m^3$ gas $($at STP of $0C$ and $1$atm $)$ per $m^3$ rubber per atm pressure of $C{O}_2.$ The diffusivity is $0\mathrm{.}11{10}^{-9}\frac{m^2}{s}.$