This is a badly worded question, I believe "burning" requires the oxygen in air.
Substances such as Phosphorus react with air to burn, and may continue this reaction when submerged. But I do not believe this is what you mean
No hydrogen will not burn in the absence of air unless another oxidizer is present.
It will not burn.
The name of the substance metals gain when they burn in air is called oxygen. Oxygen is a reactive gas that combines with the metal atoms during the burning process, forming metal oxides.
the conversion of carbon ore into metal oxide in absence of air.
the conversion of carbon ore into metal oxide in absence of air.
When metals burn in air they form metal oxides.
like Mg is a meta and it burn in the presence of N2. Na is also a metal which is so reactive and it explode in the contact of water and air.
the absence of air is "vacuum"
it forms metal oxides
Let's see.2Ag + 2HNO3 -> 2AgNO3 + H2Looks like that gaseous product is hydrogen gas.
oxygen must be present in order for fuel to burn.
Cesium is the most reactive metal in the periodic table and will catch fire when exposed to airPhosphorus : A non-metal element, no. 15, symbol P. Most familiar as a waxy, yellow solid which is spontaneously inflammable in air.