Note the following balanced chemical equation: 2CO + 02 ^=?2C02 Which one of the following statements is significant in relation to the above chemical equation?

The balanced chemical equation 2CO + O2 → 2CO2 provides the stoichiometric coefficients that represent the molar ratios of the reactants and products. Specifically, the coefficient '2' for CO and the implicit '1' for O2 indicate that for every two moles of carbon monoxide consumed, one mole of oxygen is required. This 2:1 molar ratio is a fundamental quantitative relationship based on the law of conservation of mass. While any amount of reagents can be added to a vessel, they will only react in this specific proportion; any excess of one reagent will remain unreacted as the other becomes the limiting reactant. Option 4 is incorrect because the stoichiometry dictates that 2 moles of CO and 1 mole of O2 would produce 2 moles of CO2, not 1 mole.