(a)[2]
State the meaning of an ideal gas.
(b(i))[1]
The mean-square speed of the atoms of a fixed mass of an ideal gas at $32\,^{\circ}\text{C}$ is $1.9 \times 10^6\,\text{m}^2\text{s}^{-2}$. The gas is then heated at constant volume to $80\,^{\circ}\text{C}$. Find the increase, in kelvin, in the gas temperature.
(b(ii))[3]
Determine the root-mean-square (r.m.s.) speed of the atoms at $80\,^{\circ}\text{C}$.