Isobaric expansion

I have a Pressure vs Volume Graph and A -> B.
It's just an isobaric expansion, the work done by the gas is -3600 J.
The gas is monatomic ideal (2.0moles).
If I used it correctly, PV=nRT, I found the change in temperature to be 216.6K.

My question is: How do I find the change in internal energy and heat? I don't have any info about the gas except that it's ideal and 2.0 moles worth.

Chi Meson

Science Advisor
Homework Helper
Use the equation for the amount of heat required to change the temperature of that gas (at constant pressure). You will have W and Q, then find delta U using the First Law.

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