A gas made up of atoms escapes through a pinhole 0.920 times as fast as Cl 2 gas. Write the chemical formula of the gas

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A gas made up of atoms escapes through a pinhole 0.920 times as fast as Cl 2 gas. Write the chemical formula of the gas

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Tài Đức 5 years 2021-08-19T09:26:13+00:00 1 Answers 39 views 0

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  1. binhan
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    2021-08-19T09:27:30+00:00
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    Answer:

    The gas with molar mass 83.9 g is Krypton, Kr

    Explanation:

    We know that as per Ghram’s law of diffusion,

    r’/ r= square root (M/M’)

    0r \frac{r'}{r } =\sqrt{\frac{M}{M'} }

    Where

    r= rate of diffusion of Cl2

    r’= rate of diffusion of unknown gas= 0.920r

    Also, M= molar mass of Cl2= 71 g/ mol

    And, M’= molar mass of unknown gas which we have to find

    Let us substitute the values in above equation

    \frac{0.920r}{r } =\sqrt{\frac{71}{M'} }

    solving we get M’ = 83.9 g/mol

    Therefore,  the gas with molar mass 83.9 g is Krypton,Kr

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