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A glass bulb of one litre contains 2 × 10^21 molecules of nitrogen exerting pressure of 7.57 × 10^3 Nm^–2.

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A glass bulb of one litre contains 2 × 1021 molecules of nitrogen exerting pressure of 7.57 × 103 Nm–2. Calculate the root mean square velocity and temperature of the gas molecules. The ratio of Umpv to Urms is 0.82. Calculate also Umpv of gas molecules at this temperature. 

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We will calculate first the temperature of the gas from the given data.

PV = nRT

All the values are to be taken in MKS system.

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