Question

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

N2 + 3 H2 —> 2 NH 3

Answer 1

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Answer 2

The answer to your question is 27 moles

Step-by-step 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