How many moles of O2 are required to generate 3 moles of CO2?

To determine the moles of O2 required to generate 3 moles of CO2, we can refer to the balanced chemical equation for the combustion of carbon (C) or a hydrocarbon, which typically follows the form: C + O2 → CO2. In this reaction, one mole of O2 produces one mole of CO2. Therefore, to generate 3 moles of CO2, you would need 3 moles of O2.