Homework Help: Chemistry II

Posted by Michelle on Wednesday, September 2, 2009 at 12:37am.

what is the molar mass of a gaseous organic compound with a density of 3.38 g/L at 40oC and a pressure of 1.97 atm?
Ok, I am little confused because I am not sure of where to plug in the density and the atm?

Chemistry II - DrBob222, Wednesday, September 2, 2009 at 12:40am
PM = (g/v)RT
1.97*M = 3.38*0.08206*(273+40)
Solve for M.

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