A Limiting Reagent is the reagent that limits the amount of products that can be formed. For example, nitrogen gas is prepared by passing ammonia gas over solid copper(II) oxide at high temperatures. The other products are solid copper and water vapor. 2 NH 3 (g) + 3 CuO(s) → N 2 (g) + 3 Cu(s) + 3 H 2 O(g) If 18.1 g of NH 3 are reacted with 90.4 g of CuO , which is the limiting reagent? How many grams of N 2 will be formed? First we compute the number of moles of
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