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Under Certain Conditions the Reaction of Ammonia with Excess Oxygen \to

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Under certain conditions the reaction of ammonia with excess oxygen will produce a 29.5% yield of NO.What mass of NH3 must react with excess oxygen to yield 157 g NO?
4 NH3(g) + 5 O2(g) \to 4 NO(g) + 6 H2O(g)


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