Final answer:
2.0 liters of carbon dioxide will be produced under the same conditions.
Step-by-step explanation:
To determine the volume of carbon dioxide (CO2) produced when 2.0 liters of oxygen gas react with excess carbon monoxide (CO), we need to use the stoichiometry of the balanced chemical equation:
2 CO (g) + O2 (g) -> 2 CO2 (g)
Since the stoichiometric ratio is 2:2, the same volume of carbon dioxide will be produced. Therefore, 2.0 liters of carbon dioxide will be produced under the same conditions.