What is the chemical equation for the combustion of methane and air to methane gas?

methane is 'methane gas' at room temperature, but its combustion reaction changes depending on the amount of oxygen available. (the following reactions are NOT balanced) Unlimited oxygen: creates water and carbon dioxide CH4 + O2 -----> H2O + CO2 Limited Oxygen Creates water and carbon monoxide CH4 + O2 -----> H2O + CO