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26 October, 15:53

Which of the following sample will have the greatest average speed at 355 K?. A. CH4. B. Ne. C. C2H4. D. Cl2

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  1. 26 October, 16:31
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    The correct answer is letter A. CH4. Spee is inversely proportional to the molecular speed, so a molecule with the greatest average speed should have the lowest molecular mass. Among the four choices, CH4 has the lowest molecular mass, hence the greatest average speed.
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