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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). The molar specific heat of mixture at constant volume is ______ `("in J//mol//K") ? ("R = 8.3 J//mol K")`

Text Solution

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`[C_(v)]_("min")=(n_(1)[C_(v_(1))]+n_(2)[C_(v_(2))])/(n_(1)+n_(2))`
`=[(2xx(3R)/2+3x(5R)/2)/(2+3)]`
`=2.1R`
`=2.1xx8.3`
`=17.4` J/mol-K
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