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16 August, 03:29

Neon gas effuses through an opening in 52 seconds, an unknown gas effuses the same distance in 76.8

Calculate the molecular mass of the unknown gas

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  1. 16 August, 03:35
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    Since neon is a monoatomic gas then

    tx/tNe=√x/MmNe

    76.8/52=√x/20

    1.48=√x/20

    squaring both sides we have:

    2.19=x/20

    cross-multiply.

    2.19*20=x

    then;

    x=43.8

    therefore the molecular mass of the unknown gas is 43.8g/mol.
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