Question

How many moles of NH3 is needed to produce 66.6 moles of H2O

Answer 1

44.4 moles of NH3.

Step-by-step explanation:

You can see in the chemical equation that 4 moles of NH3 reacted produces 6 moles of H2O. We want to know how many moles we need to produce 66.6 moles of H2O. To do this, we state a rule of three:

`\begin{gathered} 4\text{ moles NH}_3\rightarrow6\text{ moles H}_2O \\ ?\text{ moles NH}_3\rightarrow66.6\text{ moles H}_2O. \end{gathered}`

And the calculation from this rule of three will be:

`66.6\text{ moles H}_2O\cdot\frac{4_\text{ moles NH}_3}{6\text{ moles H}_2O}=44.4\text{ moles NH}_3.`

We will need 44.4 moles of NH3 to produce 66.6 moles of H2O.