There are some interesting things of note here. The pressure and temperature of all collectors are 1 atm and 273 K, respectively. The volumes and the quantity are the same, 22.4 L and 1 mole, respectively. The mass, however, changes. Therefore, we see that Avogadro's Law has no relevance in terms of the mass of the gas, as they will vary. However, it accurately predicts that at the same pressure and temperature, 1 mole of any gas is always the same volume.