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A Mixture of 2 moles of helium gas (atomic mass = 4u), and 1 mole of argon gas (atomic mass = 40u) is kept at 300 K in a container. The ratio of their rms speeds rms rms V (helium) V (arg on) ⎡ ⎤ ⎢ ⎥ ⎣ ⎦ , is close to :

1. 0.32
2. 3.16
3. 2.24
4. 0.45

Correct answer: 3.16

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