A chemical engineer calculated that 15.0 mol H2 was needed to react

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A chemical engineer calculated that 15.0 mol H2 was needed to react with excess N2 to prepare 10.0 mol NH3. But the actual yield is 60.0% . Write a balanced chemical equation for the reaction. Is the amount of H2 needed to make 10.0 mol NH3 more than, the same as, or less than 15 mol? How many moles of H2 are needed?

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15moles exactly

25 mol H2

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