## Question on the units of work

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

John_Richey_4A
Posts: 69
Joined: Fri Sep 28, 2018 12:27 am

### Question on the units of work

In question 8.3 you use the conversion of atm into pascals rather than kilo pascals in the final answer, then is question 8.9 they expect you to use the conversion of atm into kilo pascals for that final answer and now I have no clue which one is correct because using either method is going to make one answer off by a factor of 1000.

Fiona Jackson 1D
Posts: 30
Joined: Fri Sep 28, 2018 12:22 am

### Re: Question on the units of work

Hi! I think both are acceptable as long as you make sure there are units attached to your answer.

Posts: 60
Joined: Fri Sep 28, 2018 12:27 am

### Re: Question on the units of work

I was in a review session the other day and the UA who was leading it said that we should match our answer's units with the units given in the problem. Therefore, if energy is given in kJ, we should give our answer in kJ, not L. atm or any other unit.

Angel Chen 2k
Posts: 59
Joined: Fri Sep 28, 2018 12:20 am

### Re: Question on the units of work

The units depend on how the question is asked. So just make sure your the unit of your answer match what is asked in the question.