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Question

A gas mixture consists of molecules of type 1, 2 and 3 with molar masses m1>m2>m3νrms.¯¯¯¯¯K and are the rms speed and average kinetic energy of the gases. Which of the following is true

A
and
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B
and

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C
and

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D
and

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Solution

The correct option is A and

The rms speed depends upon the molecular mass νrms1M but kinetic energy does not depends on it EM0
In the problem m1>m2>m3 (νrms)1<(νrms)2<(νrms)3 but (¯¯¯¯¯K1)=(¯¯¯¯¯K2)=(¯¯¯¯¯K3)

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