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A gas absorbs 200J of heat and expands a...

A gas absorbs `200J` of heat and expands against the external pressure of `1.5 atm` from a volume of `0.5` litre to `1.0` litre. Calculate the change in internal energy.

Text Solution

Verified by Experts

`w = -P DeltaV = -1.5 xx (1.0-0.5) = -0.76` litre atm.
`=-0.75 xx 101.3 J = -75.975` J
`therefore` 1 litre atm = 101.3 J
Now, `DeltaE = 200 - 75.975 = +124.025` J
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