Problem $1(25$ points$)$:

A $300L$ tank containing a highly flammable gas leaked in a completely closed storage room of size $4mx4m3m(LWH)$ at $25C$ and $1$atm. Find:

A$)$ Air to fuel ratio in the closed storage room?

B$)$ Can there be a "complete" explosion? Hint: find the air to fuel to ratio to cause a stoichiometric combustion $($ICA problem$).$ If value of Part B $>$ Part $A=$ no explosion; Part $A=21\%O_{2}79\%N_{2}245\frac{g}{m}$ole$24\mathrm{.}5L25C1atm{O}_{2}B$ art $A=$ Explosion!

Assume:

Air composition: $21\%O_2$ and $79\%N_2$

The molecular weight $of$ the gas $is245\frac{g}{m}$ole.

$1$ mole $of$ gas occupies $24\mathrm{.}5Lof$ volume $at25C$ and $1$atm.

$1$ mole $of$ gas stoichiometrically needs $10$ mole $of{O}_{2}to$ completely combust.