Three identical vessels have gases at the same temperature and pressure. The first vessel contains neon (monoatomic), the second contains chlorine (diatomic), and the third contains uranium hexafluori

Question

Three identical vessels have gases at the same temperature and pressure. The first vessel contains neon (monoatomic), the second contains chlorine (diatomic), and the third contains uranium hexafluoride (polyatomic). If $n_{1}, n_{2}, n_{3}$ be the number of moles and $v_{1}, v_{2}, v_{3}$ the rms velocity of gases in vessel 1, 2 and 3 respectively, then

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Answer:

D

Solution:

Avogadro law: same P, V, T ⇒ same number of moles. $v_{r m s} = \frac{3 RT}{M} : M_{N e} < M_{C l_{2}} <$ $M_{U F_{6}} \Rightarrow v_{1} > v_{2} > v_{3}$ .

TestHub · Accepted Answer

Avogadro law: same P, V, T ⇒ same number of moles. v r m s = M 3 RT : M N e < M C l 2 < M U F 6 ⇒ v 1 > v 2 > v 3 .

Physics - Heat & Thermo Question with Solution | TestHub

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