# Nitrogen Instead of Oxygen??

**URL:** <https://forums.speedlife.net/t/nitrogen-instead-of-oxygen/15406>\
**Category:** NYSpeed Automotive\
**Created:** [August 2, 2006, 3:44pm UTC](https://forums.speedlife.net/t/nitrogen-instead-of-oxygen/15406 "2006-08-02T15:44:28Z")\
**Posts on this page:** 1\
**Showing post:** 17

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**Author:** ![LAFENGAS](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/lafengas/32/7573_2.png) [@LAFENGAS](https://forums.speedlife.net/u/LAFENGAS)\
**Post date:** [August 3, 2006, 9:19am UTC](https://forums.speedlife.net/t/nitrogen-instead-of-oxygen/15406/17 "2006-08-03T09:19:26Z")

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correct… "No, nitrogen does NOT have more mass. GMW of diatomic nitrogen is 28.

GMW of diatomic oxygen is 32."

volume is what i should have said … since the passing through a substrate (rubber) is limited by its size, not weight.

> [@BikerFry](#):
>
> I’m actually not totally clear on why nitrogen changes less than oxygen volumetrically when temperature changes.

i think you need to revert back to V=nRT/p

I believe, Nitrogen is a more tightly packed compressed gas and therefore more stable.

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