## Ideal Gases Formula Pt. 2

$w=-P\Delta V$
and
$w=-\int_{V_{1}}^{V_{2}}PdV=-nRTln\frac{V_{2}}{V_{1}}$

Jacob Shalkevich 1A
Posts: 20
Joined: Fri Sep 25, 2015 3:00 am

### Ideal Gases Formula Pt. 2

When might you use U=3/2nRT; Cv=3/2R; Cp=5/2R?
I am yet to come across a practice problem in which I need it.

Albert Chong_1L
Posts: 77
Joined: Fri Sep 25, 2015 3:00 am

### Re: Ideal Gases Formula Pt. 2

One instance would be when you find the change in entropy of a monatomic ideal gas due to change in temperature.

chris2E
Posts: 14
Joined: Fri Jul 22, 2016 3:00 am

### Re: Ideal Gases Formula Pt. 2

If you're looking for a problem that incorporates any of U=3/2nRT; Cv=3/2R; and/or Cp=5/2R, take a look at problem 8.31 in Chapter 8!