Two vessels A and B having equal volume contain equal masses of hydrogen in A and helium in B at 300 K. Then mark the correct statement

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the pressure exerted by hydrogen is half that exerted by helium

the pressure exerted by hydrogen is equal to that exerted by helium

average KE of the molecules of hydrogen is half the average KE of the molecules of helium

the pressure exerted by hydrogen is twice that exerted by helium

answer is D.

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Detailed Solution

PV =nRT =mM0RT here V same m same so pressure is inversely proportional to molecular weight

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