Science questions not covered in Chem 14A and 14B. Try to limit questions to chemistry (inorganic chemistry, physical chemistry, organic chemistry, biophysical chemistry, biochemistry, materials science, environmental chemistry).
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Madeline Fox 2B
- Posts: 25
- Joined: Wed Sep 21, 2016 2:59 pm
Can someone explain to me why there are two different R constants? One that is .0821 & the other that is 8.3145. I'm very confused on how you know when to use each one when there is an R in the equation
emilie liu 3G
- Posts: 23
- Joined: Fri Jul 22, 2016 3:00 am
You can determine which R constant to use in the problem depending on the units of the problem. The units of R should match the units in your problem.
- Posts: 22
- Joined: Fri Jul 15, 2016 3:00 am
.0821 has units L*atm/(K*mol) ad 8.314 has units J/(K*mol) so depending on what the problem is asking and what units are used in the problem, you can determine which R to use
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