a$.$ What is the maximum cell density that this reactor can support? Unit conversions will be necessary.

b$.$ How long will it take to reach that density if you being with $0\mathrm{.}05$ g$/$L cells?

c$.$ What is the yield of cells on Oxygen $($YX$/$O$2)?$

d$.$ Assuming a flow rate of $3$lpm of airflow into a $2$ L fermentation, $3$ g$/$L for air density and a $30\%$ of saturation DO concentration in the bulk liquid; what would be the difference in oxygen concentration between the inlet and outlet gas for culture?