$($a$)$

How much heat $($in J$)$ must be added to raise the temperature of $2\mathrm{.}40$ mol of air from $19\mathrm{.}0$C to $29\mathrm{.}0$C at constant volume? Assume air is completely diatomic.

J

$($b$)$

Repeat the problem for the same number of moles of helium, He$.($Enter your answer in J$.)$

J