In a sample of an ideal gas, the average momentum of a molecule depends on

pressure

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mass of gas

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number of moles

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none of these

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Solution

The correct option is D none of these
As momentum is a vector quality and its direction is the direction of velocity vector.
In a ideal gas, all molecules have totally random motion i.e, velocities in each direction so their average will be a vector sum that is zero .
Thus average momentum due to similar fact is zero and thus does not depend on anything.
Hence, the answer is none of these.

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