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Feb 23, 2023 at 14:27 vote accept jimb
Feb 18, 2023 at 13:42 history edited John K CC BY-SA 4.0
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Feb 18, 2023 at 8:05 comment added sophit @user71659: yes sure, water is not an ideal gas. But the answer is speaking about the expansion of oxygen vs. nitrogen.
Feb 18, 2023 at 3:14 comment added user71659 @sophit Air does not behave as an ideal gas due to the presence of water vapor. Water has a strong dipole moment, which makes it deviate from an ideal gas, particularly as the tire is expected to operate within the relatively small range between freezing and boiling of water.
Feb 17, 2023 at 20:26 comment added John K @sophit I thought there were small differences at higher pressures no?
Feb 17, 2023 at 20:24 comment added John K @Frog even at 150-200 psi?
Feb 17, 2023 at 19:31 comment added sophit Thermal expansion coefficient of oxygen and nitrogen should be basically the same i.e. like the one of any other (ideal) gas. I suppose that the main reason to use pure nitrogen instead of air is still to avoid to feed any fire in case of incident.
Feb 17, 2023 at 18:54 comment added Frog Although oxygen molecules are smaller than nitrogen (0.299 vs 0.305nm) the difference is insignificant from a leakage perspective. That’s nanometers of course, not nautical miles
Feb 17, 2023 at 17:42 history answered John K CC BY-SA 4.0