Using the equation of state pV=nRT, show that, at a given temperature the density of a gas is proportional to its gas pressure p.
PV=nRT=wMRT
Hence, PM=wVRT=ρRT
ρ∝P
Here, ρ=wV
n=wM
ρ is the density, P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, T is the temperature and M is the molar mass.