The root-mean-square (rms) speed of oxygen molecules `(O_(2))` at a certain absolute temperature is v.If the temperature is double and the oxygen gas dissociated into atomic oxygen, the rms speed would be

Explanation

`V_("m s") = sqrt((3RT)/M)" or "V_("m s") prop sqrt(T/M)`
When oxygen gas dissociates into atomic oxygen its atomic mass M will remain half. Temperature is doubled. So, from Eq. (i) `V_("m s")` will become two times