A gas can expand from 100 ml to 250 ml under a constant pressure of 2 atm. The work done by the gas is _____

Explanation

`DeltaV`=expansion in volume =100 to 250
`DeltaV=V_2-V_1`=250-100
`DeltaV`=150 ml =0.15litre
Work done = ?
Pressure =2 atm
`w=-P DeltaV`
`=-2xx0.15 "litre" xx 101.3 J L^(-1) "atm"^(-1)`
=-30.39 J