Question

How many moles of H2 are needed to produce 18 moles of NH3 in the reaction below?

Answer 1

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Answer 2

Answer:

The answer to your question is 27 moles

Explanation:

Data

moles of H₂ = ?

moles of NH₃ = 18

balanced chemical reaction

                N₂  +  3H₂   ⇒   2NH₃

Process

To solve this problem use proportions and cross multiplication. Use the coefficients of the balanced reaction.

                3 moles of hydrogen --------------------- 2 moles of ammonia

                x                                   --------------------- 18 moles of ammonia

                             x = (18 x 3) / 2

-Simplifying

                            x = 54/2

-Result

                             x = 27 moles