## Q 8.11

$\Delta U=q+w$

Belle Calforda3f
Posts: 67
Joined: Fri Sep 29, 2017 7:07 am

### Q 8.11

I thought the value for R was .0821, where is the answer book getting 8.314 J/KxMOL?

Tiffany 1B
Posts: 32
Joined: Fri Sep 29, 2017 7:05 am

### Re: Q 8.11

Hi. So I think the difference between the R value of 0.08206 or (0.0821) and the R value the book used is the pressure unit. The R=8.314 is using kPa vs the R= 0.0821 is using atm
Straight from my constant sheet from last quarter:
R = 8.314 L ∙ kPa ∙ K−1∙ mol−1
R = 0.08206 L ∙ atm ∙ K−1∙ mol−1
Hope that helps.