An excess reactant is supplied in greater quantity than required and remains after the reaction.
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45. In the reaction 4NH₃ + 5O₂ → 4NO + 6H₂O, 34 g of NH₃ and 48 g of O₂ are reacted. The mass of NO formed is
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47. In the reaction 2ZnS + 3O₂ → 2ZnO + 2SO₂, 97.5 g of ZnS and 48 g of O₂ are used. The mass of ZnO formed is