The rms speed of oxygen molecules at a certain temeperature is 400 m/s . What is the rms speed of nitrogen molecules at the same temperature ?

Explanation

At a constant temperature `,c_("rms") prop 1//sqrtM`
`c_(2) =c_(1) = sqrt(M_(2)//M_(1))`
` 400 xx sqrt(28/32)= 400 sqrt(7/8) m//s`
This ix the rms speed of nitrogen molecules at the same temperature.