A mixture of 2 moles of helium gas|Physics|JEE Advance2012

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JEE Advance 2012

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Question

A mixture of 2 moles of helium gas (atomic mass = 4 amu), and 1 mole of argon gas (atomic mass = 40 amu) is kept at 300 K in a container. The ratio of the rms speeds $\left(\frac{\mathrm{v}_{\text {rms }}(\text { helium })}{\mathrm{v}_{\text {rms }}(\text { argon })}\right)$ is :

Select the correct option:

A

0.32

B

0.45

C

2.24

D

3.16

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