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Average kinetic energy of the atom of Hg...

Average kinetic energy of the atom of Hg vapour is 1000 `cal*mol^(-1)`. What will be the value of its rms velocity?

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`overline(in)=(3)/(2)RT=1000" cal"*mol^(-1)`
`=1000xx4.157xx10^(7)erg*mol^(-1)`
`therefore 3RT=2000xx4.157xx10^(7)g*cm^(2)*s^(-2)*mol^(-1)`
`ns=sqrt((3RT)/(M))=sqrt((2000xx4.157xx10^(7))/(200))cm//s`
`=2.04xx10^(4)`cm/s
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