A gas expands from 4.0 L to 4.5 L agains...

A gas expands from 4.0 L to 4.5 L against a constant external pressure of 1 atm. The work done by the gas is (1 L-atm = 101.3 J)

`- 62.25 J`

`- 50.65 J`

`- 52.25 J`

`- 60.25 J`

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