Gas without which combustion is impossible?

Combustion refers to the intense oxidation of a substance to form a flame. Oxygen is the oxidizing agent under normal conditions. Therefore, the gas, without which combustion is impossible, is oxygen O2. There is a lot of it in the air we breathe. However, combustion is also possible in the environment of other oxidizing gases. For example, hot iron will burn in a jar of chlorine, while water burns in a fluorine atmosphere.



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