Chemistry
posted by Camarra .
The density (in g/L) of CO2 at 444 torr and 6.0°C is __________. Express answer to three (thousandth) decimal places
I don't know how to start this problem at all. Help please.

C'mon. I derived an equation for you this morning. All you need to do is to substitute and solve.
P*M = (g/L)*R*T
P is pressure in atmosphere. You show it in torr. torr/760 = atm. M is molar mass. g/L is density. R is a constant = 0.08206 and T is temperature in Kelvin. Plug and chug.