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

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TestHub · Accepted Answer

​ V ms ​ = M w ​ 3 RT ​ ​ ⇒ V He ​ V O 2 ​ ​ ​ = M w , O 2 ​ ​ M w , He ​ ​ ​ = 32 4 ​ ​ = 2 2 ​ 1 ​ V O 2 ​ ​ V He ​ ​ = 1 2 2 ​ ​ ​

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