Chemistry
posted by Lauren on .
Chloroform CHCl3, is a volatile liquid solvent. Caculate the density of cholroform vapor at 98 degrees C and 797 mmHg. Give the answer in grams per liter.
How do I start this out

PV = nRT
You know P. Assume V = 1 L. You know R and T. Calculate n = mols and that is mols in 1 L.
mols = g/molar mass. you now know mols and you know molar mass. Calculate grams. And that is in 1 L so the answer is g/L. You can do it another way all in one step if you want to redo the equation a little.
PV = nRT
P = (n/V)*RT
but n = g/molar mass so
P = (g/molar mass*V)*RT
But g/V = density = d so
P = (d/molar mass)*RT and solve for d.
d = (P*molar mass)/(RT) 
0.034448