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

by superjose
Tags: pvmrt, pvnrt, write
 P: 15 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.
 P: 2,170 Apparently its an alternative way of writing the formula given the mass: http://crown.panam.edu/thermodynamic...t/gaslaw1f.htm and here: http://www.roymech.co.uk/Related/The...ific_heat.html
 Admin P: 21,687 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.
P: 15

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

 Quote by jedishrfu Apparently its an alternative way of writing the formula given the mass: http://crown.panam.edu/thermodynamic...t/gaslaw1f.htm and here: http://www.roymech.co.uk/Related/The...ific_heat.html
 Quote by Borek 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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