Answered

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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

Sagot :

Manetho

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 [tex]\frac{r'}{r } =\sqrt{\frac{M}{M'} }[/tex]

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

[tex]\frac{0.920r}{r } =\sqrt{\frac{71}{M'} }[/tex]

solving we get M' = 83.9 g/mol

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

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