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Question

Consider the following balanced equation: 3CuO(s) + 2NH3(g) → 3H2O(l) + 3Cu(s) + N2(g) If 3.92×102 grams of NH3(g) reacts with an excess of CuO(s) to produce 2.02×103 grams of Cu(s), what is the percent yield of the reaction?