Q$.4$

The specific haet capacity of toluene is given by following equation:

$C_p=20\mathrm{.}869+5\mathrm{.}293{10}^{-2}T$

Where $C_p$ is in $Bt\frac{u}{\text{l}\text{b}\text{m}\text{o}\text{l}F}$ and $T$ is in $F.$ Express the equation in cal$/($gmol K$)$ with $T$ in $K.$

Remember that the temperature unit in the denominator of $C_p$ refers to a temperature interval.

Q$.5$

The ideal gas equation of state relates absolute pressure, $P(atm)$; gas volume, $V($liters$)$; number

of moles of gas, $n($gmol$)$; and absolute temperature, $T(K)$ :

$PV=0\mathrm{.}08206nT$

Convert the given equation to another equation that relating $P(g),V(f{t}^3),n(lbmol),$

and $T(F).$

A $25\mathrm{.}0$mole$\%CO$ and $75\mathrm{.}0$mole$\%N_2$ gas mixture is stored in a cylinder with a volume

of $4\mathrm{.}0f{t}^3$ at a temperature of $90F.$ The reading on a Bourdon gauge attached to the

cylinder is $550$ Psi. Calculate the total amount of gas $(1$bmol and the mass of $CO(l{b}_m)$

in the cylinder.

A pproximately to what temperature $(F)$ would the cylinder have to be heated to

increase the gas pressure to $3000$ Psig, the rated safety limit of the cylinder? $($The

estimate would only be approximate because the idal gas equation of state would not be

accurate at pressures this high$).(((($Please answer question $4$ and $5$ and in the paper and if you want change the units please change in the one table or linear table$)))$