## using ratios for R

LBacker_2E
Posts: 104
Joined: Wed Sep 18, 2019 12:21 am
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### using ratios for R

I think I understand when to use the ratios for R in terms of when to plug it into my calculations, but what is the point of them and what do they mean?

haileyramsey-1c
Posts: 105
Joined: Thu Jul 25, 2019 12:18 am

### Re: using ratios for R

The R value allows for Cp to be related to Cv since they are not the same values. But, for ideal gases if you know one value you can determine the other using the R value ratios.

Amanda Mei 1B
Posts: 109
Joined: Sat Aug 24, 2019 12:16 am

### Re: using ratios for R

I believe you also use ratios for R to get everything to have the same units. You can use the ratios of R because they would cancel out (like multiplying by a fraction that equals 1).

Connie Chen 1E
Posts: 51
Joined: Mon Jun 17, 2019 7:24 am

### Re: using ratios for R

To add on, heat capacities vary depending on molecular properties. So depending on the type of molecule (i.e. monatomic gas or linear molecule), there will be different properties to account for and thus different ratios to use, as derived through various formulas.