I know that in P=nRT/v

R = 8.314 m

^{3}*Pa/mol*k

Now, when you are trying to calculate P, if you have volumn in m

^{3}on the bottom, everything cancels out and you are left with Pa.

I've just developed a simulator which simulates particle motion over time and calculates pressure in a box. The box however is in 2D, not 3D, so I only have m

^{2}on the bottom. The number's I'm getting are roughly correct with the ideal gas law, but are all off by a factor 1000 or 10000 for some reason. I can't see this factor being a coincidence, I think it's because of the m

^{3}, m

^{2}difference but am unsure of how to calculate R for m

^{2}, or why it would be 0.008314 (e.g. a factor of 1000) for m

^{2}.

If you have any suggestions, let me know! Thanks.

Jason

(PS: I had to do the simulator as a project. Not sure if this this qualifies it as a "homework" question or not).