First slide

Rms speed

Question

The root mean square velocity at room temperature of an ideal diatomic gas is approximately calculated to be 1918 m/s. The gas may be

Moderate

A

$N_{2}$
B

$O_{2}$
C

$H_{2}$
D

He

Solution

$V_{r m s} = \sqrt{\frac{3 R T}{M}} M = \frac{3 R T}{V_{r m s}^{2}}$

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