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Q.

Consider a sample of oxygen behaving like an ideal gas. At 300 K, the ratio of root mean square (rms) velocity to the average velocity of gas molecule would be:
( Molecular weight of oxygen is  32 g/mol;  R=8.3​JK−1 mol−1) 

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a

8π3

b

33

c

83

d

3π8

answer is C.

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Detailed Solution

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Vrms=3RTM  and    Vavg=8RTπM                       VrmsVavg=3π8

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