$($a$)$ Construct a stoichiometric table in terms of molar flow rates $($Fi$)$ for the gas phase oxidation of ethylene $($C$2$H$4)$ to ethylene oxide $($C$2$H$4$O$)$ in a constant$-$ pressure plug flow reactor based on the following initial conditions : FC$2$H$4,0=1\mathrm{.}0$ mol$/$s$,$ yO$2,0=0\mathrm{.}4,$ P $=1\mathrm{.}0$ Bar, and T $=400$ K$.($b$)$ If the reaction proceeds to $80\%$ completion at a constant temperature, what is the concentration of ethylene oxide and the volumetric flow rate in the reactor outlet?$($c$)$ If the temperature changes as the reaction proceeds, can the table be constructed in terms of molar flow rate? Molar concentrations? Partial pressures? Explain.