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OpenStudy (anonymous):
Which of the following sample will have the greatest average speed at 355 K? CH4 Ne C2H4 Cl2
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OpenStudy (chmvijay):
speed inversely proportional to the molecular mass higher molecular weight lower is speed
OpenStudy (chmvijay):
methane
OpenStudy (anonymous):
average speed=\[\sqrt{\frac{ 8RT }{ \pi M}}\] M=Molecular Mass is lowest for CH4 Hence, it has highest average speed.
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