Summary:
- Density is defined as the mass per unit volume of a substance.
- Since gases all occupy the same volume on a per mole basis, the density of a particular gas is dependent on its molar mass.
- Molar mass divided by molar volume yields the gas density at STP.
- Gas densities are typically reported in g/L.
- Gas density can be calculated from molarMass and molarVolume.
- The density of nitrogen is slightly larger than molarvolume, so the density is slightly greater than 1 g/l.