That's a good idea RedDevil , That test sounds pretty sound.
I found in wiki that Nitrogen gas is about 3% lighter than Oxygen, then I found its atomic make up, it looks like oxygen has a larger "footprint" or mass so it should not leak faster then nitrogen, if I read the information correctly this myth is Busted !
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- Oxygen -
Atomic Mass: 15.9994 amu
Melting Point: -218.4 °C (54.750008 K, -361.12 °F)
Boiling Point: -183.0 °C (90.15 K, -297.4 °F)
Density: 0.001429 grams per cubic centimeter
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- Nitrogen -
Atomic Number: 7
Atomic Weight: 14.0067
Melting Point: 63.15 K (-210.00°C or -346.00°F)
Boiling Point: 77.36 K (-195.79°C or -320.44°F)
Density: 0.0012506 grams per cubic centimeter
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