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Two moles of helium gas is mixed with th...

Two moles of helium gas is mixed with three moles of hydrogen molecules (taken to be rigid) what is the molar specific heat of micture of constant volume? `(R=8.3JmolK)`

Text Solution

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The correct Answer is:
17.43
`U=U_(1)+U_(2)`
`(n_(1)+n_(2))C vDeltaT=n_(1)Cv_(1)DeltaT+n_(2)Cv_(2)DeltaT`
`Cv=(n_(1)Cv_(1)-1+n_(2)Cv_(2))/(n_(1)+n_(2))=(2xx(3)/(2)R+3xx(5)/(2)R)/(5)=2.1R`
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