1. Write the balanced chemical equation:

The complete combustion of ethanol (C2H5OH) produces carbon dioxide (CO2) and water (H2O):

C2H5OH + 3O2 → 2CO2 + 3H2O

2. Analyze the stoichiometry:

The balanced equation shows that:

* 1 mole of ethanol (C2H5OH) reacts with 3 moles of oxygen (O2)

* This reaction produces 2 moles of carbon dioxide (CO2) and 3 moles of water (H2O)

3. Conclusion:

Therefore, 2 moles of CO2 are produced from each mole of C2H5OH completely burned.