## 4F.7

Volume: $\Delta S = nR\ln \frac{V_{2}}{V_{1}}$
Temperature: $\Delta S = nC\ln \frac{T_{2}}{T_{1}}$

205150314
Posts: 106
Joined: Wed Feb 20, 2019 12:16 am

### 4F.7

Ive read that we need to use 3/2 R and 5/2R with the formulas of Cp/v*ln(T2/T1) but I am not getting the right answers . is R not 8.3145? or do I need to divide the entire thing by 2?

AArmellini_1I
Posts: 107
Joined: Fri Aug 09, 2019 12:15 am

### Re: 4F.7

I don't have my homework on me right now but on thing I messed up on was using the wrong R, check your units and make sure everything cancels and you get the correct units. Different R's have different units

205150314
Posts: 106
Joined: Wed Feb 20, 2019 12:16 am

### Re: 4F.7

AArmellini_1I wrote:I don't have my homework on me right now but on thing I messed up on was using the wrong R, check your units and make sure everything cancels and you get the correct units. Different R's have different units

i figured it out , like a dumbo I didnt convert it to Kelvin

Thank you though!