$30$ mol s$-\text{'}$ Propane $($C$3$Hs$)$ and air enter a furnace at a temperature of $25\backslash$deg C$.$ The air flow rate is sufficient to achieve complete combustion of the propane $($i$.$e$.$ air is supplied at the stoichiometric ratio$).$ In answering this question, you can assume air is $79\%($v$/$v$)$ N$2$ and $21\%($v$/$v$)$ O$2$:

All of the products leave the furnace in the gas phase, temperature of $300\backslash$deg C

at

Perform the mass balance and determine the inlet and outlet flow rates of each component $($in mol s$-\text{'}).$

Using this information $($or otherwise$)$ determine how much steam @n Kg s$1)$ can be produced $-$you can assume that no energy is needed to pre$-$heat the feedwater $($i$.$e$.$ only the enthalpy of vaporization needs to be considered$),$ and that the steam is at a pressure of $20$ bar

C