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11/09/2021 11:25 am
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The most probable speed of 8 g of H2 is 200 ms–1. Average kinetic energy (neglect rotational and vibrational energy) of H2 gas is:
(a) 480 J
(b) 240 J
(c) 120 J
(d) none of these
1 Answer
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11/09/2021 11:27 am
(b) 240 J
Explanation:
200 = \(\sqrt{\frac{2RT}{2 \times 10^{-3}}}\)
RT = 40
Average K.E. = \(\frac{3}{2}\)nRT
= \(\frac{3}{2}\) x \(\frac{8}{2}\) x 40
= 240 J
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