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15 September, 03:13

Rank the following gases in order of decreasing rate of effusion.? Ar C_3H_8 He

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  1. 15 September, 05:06
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    According to Graham's law, rate of effusion = 1/molecular weight

    the smallest molecule has the fastest rate of effusion and vice versa. the molecular weight of Ar is 40, He is 2 and C3H8 is 44.

    Arranging from the fastest to lowest, the order is: He, Ar and C3H8.
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