The most probable speed of an oxygen molecule in the gas phase at room temperature is 450 m/s. The root-mean-square speed (urms) is therefore equal to 450 m/s. much greater than 450 m/s. slightly less than 450 m/s. much less than 450 m/s. slightly greater than 450 m/s.

Explanation:

We have,

The most probable speed of an oxygen molecule in the gas phase at room temperature is 450 m/s.

The formula of the most probable speed of a gas molecule is given by :

So,

The RMS speed of the gas molecule is given by :

Use equation (1) in above equation :

It is clear that the RMS speed of the gas molecule is greater than 450 m/s.

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