Problem: WF6 is one of the heaviest known gases.How much slower is the root-mean-square speed of WF6 than He at 300 K?

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Concept: Root mean square velocity/speed.

Using the root mean square speed equation, find speed of the 2 gases separately, next find ratio of the two speeds.

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Problem Details

WF6 is one of the heaviest known gases.

How much slower is the root-mean-square speed of WF6 than He at 300 K?