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Three vessels of equal capacity have gas...

Three vessels of equal capacity have gases at the same temperature and pressure. The first vessel contains neon (monatomic) the second contains chlorine (diatomic) and the third contains uranium hexafluoride(polyatomic). Do the vessels contain equal number of respective molecules? Is the root mean square speed of molecules are same in the three cases in `v_(rms)` the largest?

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The correct Answer is:
Yes
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