Patrolman previously posted:
"nitrogen made them less likely to lose air because the molecules/atoms are larger than what would be found in compressed air."
Nitrogen has a 14g/mol Molecular weight. Nitrogen isn't found in nature as just a single atom in the air its N2 which would have a 28g/mol molecular weight. The average molecular weight of air is 29g/mol and Oxygen also found in nature as O2 has a weight of 32g/mol. Carbon Dioxide is 44g/mol The molecule size argument doesn't hold much weight
.
What's going to make a difference is energy change due to change in temperature. Nitrogen may not be as effected by changes in temperature as other gases but that's not something I know.