When do I plug in the ideal gas constant, R, as 0.0825, and when do I plug it in as 8.314?
Not sure when to use which!
Ideal gas constant R
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Re: Ideal gas constant R
Look at the units you are dealing with, the constants have different units. So if you don't know try looking at what units you are using and comparing them to the units of the gas constants.
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Re: Ideal gas constant R
I think it just depends on which units you are working with: R = 0.08206 L x atm x K^-1 x mol ^-1 and R = 8.314 J x K^-1 x mol^-1.
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Re: Ideal gas constant R
The units for the small constant given above are atm L per mol K and the other constant is J per mol K, since the mol K in the denominator is consistent, it depends on whether you are using pressure and volume( atm and L) or energy (J or kJ) in the overall mathematic expression.
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Re: Ideal gas constant R
Yeah, it depends on the question and what units you would need to be able to cancel out
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