According to the balanced chemical equation, 1 mole of O₂ reacts with 2 moles of NO to produce 2 moles of NO₂.
So, theoretically, to produce 13.0 moles of NO₂, we would need 13.0/2 = 6.5 moles of O₂.
However, the reaction only has a yield of 66.3%. This means
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