At room temperature, the rms speed of the molecules of certain diatomic gas is found to be 1930 m/s. The gas is :
Answer & explanation
Correct answer: option 1
Root mean square velocity :
\(v_{rms} = \sqrt{\frac{3RT}{M}}\) = 1930 m/s
M = \(\frac{3RT}{1930^2} = \frac{3*8.31*300}{1930^2}\) = 2 x 10-3 kg
M = 2 g