Calculate the maximum molar flux of molecular oxygen transfer in a stirred bioreactor consisting of $7$ g of activated yeast $($wet weight, density $1150$ kg$/$m$3)$ diameter is $0\mathrm{.}667$um in $100$ ml of solution at $25\backslash$deg C$.$ The plug allows free passage of air into the plug, so that oxygen saturation of the culture medium can be considered. The density of the medium is $990$ kg$/$m$3.$When considering the presence of other nutrients, the actual utilization of molecular oxygen by the yeasts is $8\mathrm{.}90$x$10-6$ kmol$/$s$,$ calculate the actual concentration of O$2$ a as $\%$ saturation. $(2\mathrm{.}5$ pts$)$