## 4.19 7th edition

$\Delta U=q+w$

paytonm1H
Posts: 74
Joined: Fri Sep 28, 2018 12:18 am

### 4.19 7th edition

4.19 asks for the molar kinetic energy of Kr(g) at two temps 1.0C apart, in which the difference is the molar heat capacity of Kr(g).

The solutions manual gives the average kinetic energy = (3/2)RT. Did we cover this in class? Where does this equation come from?

Meghanhe1l
Posts: 60
Joined: Fri Sep 28, 2018 12:17 am

### Re: 4.19 7th edition

We did go over thus in class. The equation relies on the fact that the internal energy of gases depends on temperature and the fact that there are three translational directions by which the molecule can move.

Return to “Concepts & Calculations Using First Law of Thermodynamics”

### Who is online

Users browsing this forum: No registered users and 1 guest