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## Homework Statement

http://s9.postimage.org/5iw5rixyl/image.jpg

(sorry doesn't let me embed)

## Homework Equations

P1V1=P2V2

and

PV=nRT

I know that Work done by gas from a --> b = (nRT)*Integral(V2/V1)

My question is do i use PV=nRT to find N? and if T is constant (isothermal) what do I plug in for T when evaluating work?

Using PV=nRT I got n= 14.440 when T=constant (1), is this correct?

I appreciate all of your help.

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