$15\mathrm{.}6$

$($a$)$ What is the ratio of the kinetic energies of $02$ molecules to that of N$2$ molecules in air at room tempera$-$ture? $($b$)$ What is the ratio of the rms speed of O$$ molecules to that of N$2$ molecules in air at room tem$-$perature? $($c$)$ Are these ratios temperature$-$dependent?