Volcanic Outgassing :D
Oxygen
Depends on the size of the tank, and the temperature and pressure of the gas. One common atmospheric temperature tank has an internal volume of 1.2 cubic feet, and they are commonly delivered at pressures of 2600 psi (or so). This gas source has a bit of water in it too. Another common delivery method is as a liquid in a dewar, and these are delivered by the unit weight, and they use atmospheric heat to boil the liquid oxygen. This gas source is usually very dry.
the most second abundant gas is oxygen
Nitrogen monoxide gas and oxygen gas
Oxygen is colorless as a gas, but as a liquid it is pale blue.
oxygen
It never was - Nitrogen is the "major gas".
The oxygen in water is the oxygen that is released into the atmosphere.
H20
Oxygen is the major gas that is the cause chemical weathering.
CO2
helium
Oxygen gas detectors, also known as lambda sensors, are an essential appliance for anyone striving for a safe and efficient home. To get the most out of a detector, it is wise to install it where major sources of excess oxygen are located. These sources can include fireplaces, ovens, and garages. An ideal oxygen detector location would be where it can detect harmful concentrations of oxygen coming from every source in the house, instead of having to install a separate detector for each potential source.
Thermal (Coal)
oxygen and then hydrogen
In India, the major source of power is coal, followed by hydroelectricity, petroleum, natural gas and nuclear power respectively.
An oxygen concentrator is a system that selectively removes nitrogen from a gas source in order to provide an oxygen-enriched product gas stream. you can check online store for the details of product, like oxygenvip, oxygensolve. these websites must have an oxygen generator suitable for you.