Internal Energy equations


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Andrew F 2L
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Joined: Sat Aug 17, 2019 12:17 am

Internal Energy equations

Postby Andrew F 2L » Sun Feb 09, 2020 12:44 am

What equations should I know for internal energy? I have only been able to determine the basic one of Delta U= q+w but There seem to be more I believe that I am not sure of which I need to solve the HW problems. Are there going to be problems that mix enthalpies and those equations with internal energy as well?

Kassidy Ford 1I
Posts: 103
Joined: Sat Aug 17, 2019 12:16 am
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Re: Internal Energy equations

Postby Kassidy Ford 1I » Sun Feb 09, 2020 11:24 am

You should know (delta)U=q+w, (delta)H=(delta)U+p(delta)V, which can also be written as (delta)H=(delta)U+nR(delta)T. Also know when change in V is 0, (delta)U=q, and when q=0, (delta)U=w. And when there is no change in temperature there is no change in U so that means q=-w.


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