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Calculate the number of molecules per un...

Calculate the number of molecules per unit volume of a perfect gas at `27^(@)C` and `10mm` of mercury. Density of mercury`=13.6xx10^(3) kgm^(-3)` and Boltzmann constant `=1.38xx10^(-23)JK^(-1)`

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The correct Answer is:
`3.22xx10^(23)`
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