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…

Q: 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 [Vrms (helium)]/[Vrms (argon)] is

(a) 0.32

(b) 0.45

(c) 2.24

(d) 3.16

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Ans: (d)