Question

Can anyone answer this question please...???

Answer 1

RMS value = root(3KT/M)
Being variation in the mass thus the RMS speed of gases in mixture = root (M of oxygen) : root(M of oxygen) =
$\sqrt{16 } : \sqrt{14} \\ = \sqrt{8} : \sqrt{7}$
Thus the required ratio is root 8 :root 7.