Answer:
![3\text{ moles}](https://img.qammunity.org/2023/formulas/chemistry/college/yge27ab7849zm0f90dpn6xxodjrss86z1a.png)
Step-by-step explanation:
Here, we want to know the number of moles of nitrogen needed to produce 9 moles of ammonia
From the equation of reaction given:
1 mole of nitrogen gas produced 3 moles of ammonia gas
Thus:
x moles of nitrogen gas will produce 9 moles of ammonia gas
Mathematically:
![\begin{gathered} x*\text{ 3 = 1 }*9 \\ x\text{ = }(9)/(3) \\ x\text{ =3} \end{gathered}](https://img.qammunity.org/2023/formulas/chemistry/college/b8xl5x0tz0xbnyh0umer6lhs1ringtpg1w.png)
What this means is that 3 moles of nitrogen gas are required to produce 9 moles of ammonia gas according to the given equation