Respuesta :

Let's assume that we are given 1 mole of N₂ gas at STP.
So mass of Nitrogen gas=28 g
1 mole of any gas occupies 22.4 Litres or 0.0224 m³ of volume
Density=Mass/Volume
=28/0.0224
=1250 kg/m³ or 1.25 kg/L