Please assume that heat is added to a moveable piston which has a constant pressure of...
Please assume that heat is added to a moveable piston which has a constant pressure of 200 ?pa. Assuming that the volume of gas contained in this cylinder expands from 0.1 ?3 to 0.2 ?3, please calculate the amount of work done by the gas contained within this piston.
Homework Answers
Work done by gas for closed system is 
(pdv) where dv is change in volume
Now for constant pressure process work done =p
dv
= p*(vf-vi)
where vf and vi are final and initial volumes
So W = 200*103*(0.2-0.1)= 20000 J or 20KJ
Work is positive means it is done by the system
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