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How many moles of hydrogen, $H$ , are needed to react with $3.0$ moles of nitrogen, $N_2$ ?

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Write linear functions: word problems

Full solution

Q. How many moles of hydrogen,

H

, are needed to react with

3.0

moles of nitrogen,

N_2

?

Chemical Equation: The balanced chemical equation for the reaction between nitrogen and hydrogen to form ammonia is $\mathrm{N}_2 + 3\mathrm{H}_2 \rightarrow 2\mathrm{NH}_3$ .
Moles Ratio: According to the equation, $1$ mole of nitrogen reacts with $3$ moles of hydrogen.
Moles Calculation: So, if we have $3.0$ moles of nitrogen, we need $3$ times as much hydrogen.
Moles Calculation: So, if we have $3.0$ moles of nitrogen, we need $3$ times as much hydrogen.Calculate the moles of hydrogen needed: $3.0$ moles $\text{N}_2 \times 3$ moles $\text{H}_2/\text{mole} \text{N}_2 = 9.0$ moles $\text{H}_2.

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