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A gas expends from 2 L to 6L against a c...

A gas expends from `2 L` to `6L` against a constant pressure of `0.5` atm on absobing `200 J` of heat. Calculate the change in internal energy.

Text Solution

Verified by Experts

`Delta U = q+w`
`= 200 J-0.5 atm (62-22)`
`= 200 J-2 L atm`
`= 200 J - 2 xx 101. 3 J ("1 L atm = 101.3 J")`
`= - 2.6 J`
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Knowledge Check

  • A gas expends from 1.5 to 6.5 L against a constant pressure of 0.5 atm and during this process the gas also absorbs 100 J of heat. The change in the internal energy of the gas is

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