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### Homework Help 8.9

Posted: Fri Jan 13, 2017 2:21 pm
So I've been doing the calculations, and reached the point where I'm supposed to concert -1.48 L atm to J.

But where does 8.314 J and 0.08206 even come from?

### Re: Homework Help 8.9

Posted: Fri Jan 13, 2017 2:29 pm
They are gas constants.

### Re: Homework Help 8.9

Posted: Fri Jan 13, 2017 2:31 pm
These two numbers are different forms of the gas constant and would be given to you on the exam. They are also on the sheet of equations on the back of the periodic table given to you when you bought your course reader.

### Re: Homework Help 8.9

Posted: Tue Jan 24, 2017 11:02 am
When would we use one constant over the other? Does it have to do with units?

### Re: Homework Help 8.9

Posted: Tue Jan 24, 2017 1:32 pm
Yes it has to do with the units. There is a list of four equivalent gas constants on the back of the periodic table, use the one with the proper units, in the case of 8.9 I believe that it is 8.206x10^(-2) L.atm/K/mol