## Midterm Review from Class

$\Delta U=q+w$

Ammarah 2H
Posts: 30
Joined: Fri Sep 29, 2017 7:06 am

### Midterm Review from Class

When we were going over old test questions, in the question about oxygen difluoride reacting with water vapor, how did we know that the system was at constant pressure?

Ammarah 2H
Posts: 30
Joined: Fri Sep 29, 2017 7:06 am

### Re: Midterm Review from Class

And also: if the system was not at constant pressure, would we need more information to solve it?