he air temperature reached $96\backslash$deg F $(36\mathrm{.}9\backslash$deg C$)$ at $2$ p$.$m$.$ and the asphalt surface was approximately

$140\backslash$deg F $(333$ K$)$ causing the cylinder temperature to be at least $135\backslash$deg F $(330$ K$).$

Additional information

Propylene boils at $225\mathrm{.}6$K at $1$ atm $(101\mathrm{.}3$ kPa$).$ The heat of vaporization is $18\mathrm{.}4$ kJ$/$mol$,$

R $=8\mathrm{.}314$ J$/$mol$$K$,$ the critical pressure and temperature are PC $=4\mathrm{.}0$ MPa and TC $=364\mathrm{.}9$

K respectively, and the vapor molar volume of propylene is $2\mathrm{.}13$ x $10-3$ m$3/$mol