A $5\mathrm{.}60-$L vessel contains $3\mathrm{.}75$ moles of gas at a pressure of $1\mathrm{.}60106$ Pa$.$

$($a$)$ Find the temperature of the gas.

K

$($b$)$ Find the average kinetic energy of the gas molecules in the vessel.

J

$($c$)$ What additional information would you need if you were asked to find the average speed of the gas molecules?

the dimensions of the vesselthe molecular mass of the gas$$the change in temperature after a very long timeNo other additional information is needed.