The balanced chemical equation for the reaction between methane (CH4) and oxygen (O2) to produce carbon dioxide (CO2) is as follows:
CH4 + 2O2 -> CO2 + 2H2O
According to the balanced equation, one mole of methane (CH4) reacts with two moles of oxygen (O2) to produce one mole of carbon dioxide (CO2) and two moles of water (H2O).
Therefore, to produce two moles of carbon dioxide (CO2), we would need 2 moles of oxygen (O2).