Chemistry - Ideal Gas Question with Solution | TestHub

$\frac{{\text{r}}_{\text{A}}}{{\text{r}}_{\text{B}}}=\sqrt{\frac{{\text{M}}_{\text{B}}}{{\text{M}}_{\text{A}}}}=\sqrt{\frac{64}{36}}=\frac{4}{3}$

${\text{r}}_{\text{A}}\text{ : }{\text{r}}_{\text{B}}=\mathrm{4 }\text{:}\mathrm{ 3}$.