Answer: 1.03 ,35CL
The rms speed is given by formula:[tex] v_{rms}=\sqrt{\frac{3RT}{M}}[/tex]
RMS speed is inversely proportional to the molecular mass. To find ratio of rms speed we take the square root of ratio of molecular masses as:[tex] \frac{v_{rms 35}}{v_{rms 37}} =\sqrt{\frac{M_{37}}{M_{35}}}
=\sqrt{\frac{37}{35}}
=1.03 [/tex]
