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12/09/2021 12:09 pm
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Helium atom is two times heavier than a hydrogen molecule at 298K. The average KE of helium is
(a) 2 times of H2 molecule
(b) same as that of H2 molecule
(c) 4 times that of hydrogen molecule
(d) 1/2 that of H2 molecule
1 Answer
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12/09/2021 12:12 pm
Correct answer: (b) same as that of H2 molecule
Explanation:
\(K \bar E\) = \(\frac{3}{2}\)\(\frac{n}{N_o}\) RT
Average \(K \bar E\) is the same for all gaseous molecules.