How do you calculate the density of a gas, based on its temperature and pressure? I've done it before, but I need a good way of remembering the process.

Question

How do you calculate the density of a gas, based on its temperature and pressure?  I've done it before, but I need a good way of remembering the process.

anonymous · Answer

Its just ideal gas equation 
If PV=nRT
Now n=m/M (Or mass by molecular mass)
substitue to get PM=m/V  RT
Now m/V is nothing but density if the gas
PM= dRT

anonymous · Answer

u can use the ideal gas law
V.P=n.R.T                               Since: n=mass of gas/molecular mass (M.M)
Therefore
V.P=( m/MM).R.T                      Therefore: P=(m/M.M.V).R.T
since: d=m/v
so  P=(d.R.T)/M.M
so d=(P. M.M)/RT


To find the density of a gas, take the P in atm times the molar mass, then divide by R (0.08206 L atm / K mol) and T (in kelvins)

anonymous · Answer

Felix: Did you get it?