Is it possible to write pV=nRT as pV=mRT?

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The discussion revolves around the use of the ideal gas law, specifically the equation pV = mRT, in a hydrology class. The original poster is confused about this formulation, believing it should include the molar mass, represented as pV = mRT/M. Clarification reveals that the teacher is likely using a specific gas constant (R) for a particular gas, which is a common practice in climate sciences. This alternative representation of the equation is acknowledged as valid, helping to resolve the poster's confusion.
superjose
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Hi people. I've been scratching my head for some time now...

My teacher of hydrology class keeps posting pV = mRT and I don't know why he is doing that.

He's trying to get the density of the air.

But I know it should go like this

pV =mRT/M...

Can someone clarify this for me?

:s

Thanks.
 
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Probably he is using R that is specific for a given gas. Nonsense if you ask me, but I have seen it done in climate sciences.
 
jedishrfu said:
Apparently its an alternative way of writing the formula given the mass:

http://crown.panam.edu/thermodynamics/homework/javascript/gaslaw1f.htm

and here:

http://www.roymech.co.uk/Related/Thermos/Thermos_Specific_heat.html

Borek said:
Probably he is using R that is specific for a given gas. Nonsense if you ask me, but I have seen it done in climate sciences.

Thanks a lot, it has solved my doubts! :D
 
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