How would oxygen be represented in the formula equation for the reaction of methane and oxygen to yield carbon dioxide and water

CH4 (g) + 2O2 (g) → CO2 (g) + 2H2O (g)

Explanation:

CH4 (g) + 2O2 (g) → CO2 (g) + 2H2O (g)

Methane + oxygen → carbon dioxide + Water.

The balanced equation above shows the combustion of methane, CH4 in oxygen, O2 to yield carbon dioxide, CO2 and steam, H2O.

The mole ratio of combustion are as follows:

1 mole of CH4 burns in 2 moles of oxygen to produce 1 mole of CO2 and 2 moles of H2O and a lot of heat.