Heat And Thermodynamics

The rms speed of oxygen molecule in a vessel at particular temperature is \(\left(1+\frac{5}{x}\right)^{\frac{1}{2}} v\), where \(v\) is the average speed of the molecule. The value of \(x\) will be:

\(\left(\right.\) Take \(\left.\pi=\frac{22}{7}\right)\)