Internal Energy


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akaylaco_1k
Posts: 21
Joined: Fri Sep 25, 2015 3:00 am

Internal Energy

Postby akaylaco_1k » Fri Jan 15, 2016 3:23 pm

Can anyone tell me what the Internal Energy is equal to when the pressure remains constant?
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Albert Agabekyan 1A
Posts: 18
Joined: Mon Oct 06, 2014 3:00 am

Re: Internal Energy

Postby Albert Agabekyan 1A » Fri Jan 15, 2016 4:31 pm

I believe when there is constant pressure, Internal energy is equal to change in enthalpy - Pressure times change in volume.

So

And if moles are involved, then is important, so it won't be zero. If it is zero, then internal energy is just equal to enthalpy.
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