I would think so, because there are two of them mixed together. Air in a Scuba tank or anywhere else should be heterogeneous. A scuba tank filled with either oxygen or nitrogen would be homogeneous.
normal gas for scuba is 20% oxygen, 80% nitrogen. You can take a nitrox course, in which you are then qualified to use different blends of oxygen and nitrogen. i.e. 40% oxygen and 60% nitrogen
The nitrogen and oxygen we breathe on this planet is a billion years old and still is safe. So I doubt nitrogen and oxygen in a scuba tank would make any difference.
Naturally the air we breath has 70% of nitrogen and only 21% of oxygen, this is done is scuba diving as well. Just oxygen is not enough for living, while oxygen is essential one.
air, nitrogen, oxygen, trace gases, and sometimes helium
Same as the air you breath everyday, aprox 21% Oxygen 79% Nitrogen
These are approximates: 78% Nitrogen, 21% Oxygen, 1 % inert gases
The simple answer is ... you don't. A majority of scuba dives use compressed air in the cylinders. Therefore you don't need "oxygen" cylinders. HOWEVER, if you are a diver that is diving on Nitrox, in which divers change the amount of oxygen vs nitrogen in their air, then your tank needs to be "oxygen clean" because you are putting oxygen in first, then nitrogen.
Normal pressurized air is used for scuba diving. However, you can get mixed gases for SCUBA diving such as Nitrox, which is mixed gases of nitrogen and oxygen. This is used by deep sea diving, but it takes special training.
Usually AIR, which is 21% Oxygen and 79% Nitrogen...BUT!!!! It could have been used for Nitrox, which is elevated Oxygen, If you dont KNOW for sure what is in it, DUMP the gas and refill the cylinder.
It varies. Divers use different breathing gases depending upon their needs.For standard air, it is 21% oxygen and 79% nitrogen.For nitrox, it can be any higher mix of oxygen, but typically either 32% or 36% oxygen, and the balance nitrogen.For trimix, you can have almost any combination of oxygen, nitrogen and helium to suit your depth, and manage your risk to oxygen toxicity and nitrogen narcosis.
Most scuba tanks are filled with simple purified air. However, some are filled with oxygen enriched air called 'nitrox' or (less commonly) a blend of helium, oxygen and nitrogen called 'trimix' or (even less commonly) helitrox or heliox.
The air inside SCUBA tanks is, usually, just regular air that has been compressed and "jammed" into a tank. Some diving applications utilize gas mixtures of oxygen, nitrogen (and sometimes hydrogen).