Calculate the density, g/cm3, of methane CH4 at 120.0oC and 824 torr.?

Question

Remember, to enter an answer in exponential notation use e, example: 1.47e-8

Answer 1

Use PV = nRT
Since V = m/rho, also n = m/MW
m: mass, MW: molecular weight, rho: density
You will have P MW = rho R T
T in Kelvins
Better to use P in Pascals.