Question

What is the number of moles represented by 3.25x10^23 molecules of KNO3

Answer 1

The number of moles of KNO3 is 0.539 moles

Explanation:

Given information

`\begin{gathered} \text{The number of molecules of KNO3 = 3.25 }*10^(23)\text{ molecules} \\ \end{gathered}`

The next step is to find the number of moles by using the below number

`Number\text{ of moles = }\frac{Number\text{ of molecules}}{\text{Avogadro's number}}`

Recall that, Avogadro's number is 6.022 x 10^23

`\begin{gathered} \text{Number of moles = }\frac{3.25\text{ }*10^(23)}{6.022*10^(23)} \\ \text{Number of moles = }(3.25)/(6.022)*10^{23\text{ - 23}} \\ \text{Number of moles = 0.539 }*10^0 \\ \text{Number of moles = 0.539 moles} \end{gathered}`

Therefore, the number of moles of KNO3 is 0.539 moles