Question 230: Thermodynamics & KTG

Question

A sample contains mixture of helium and oxygen gas. The ratio of root mean square speed of helium and oxygen in the sample, is :

Accepted Answer

$$\begin{aligned}
& v=\sqrt{\frac{3 R T}{M}} \
& \Rightarrow \frac{v_{\mathrm{H}_{\mathrm{e}}}}{v_{\mathrm{O}_2}}=\sqrt{\frac{M_{\mathrm{o}_2}}{M_{\mathrm{H}_e}}}=\frac{2 \sqrt{2 }}{1}
\end{aligned}$$

Answer

$$\frac{1}{2 \sqrt{2}}$$

Answer

$$\frac{1}{4}$$

Answer

$$\frac{2 \sqrt{2}}{1}$$

Answer

$$\frac{1}{32}$$

Thermodynamics & KTG

A sample contains mixture of helium and oxygen gas. The ratio of root mean square speed of helium and oxygen in the sample, is :

Choose the correct answer: