Question

10. How many moles are in 9.03 x 10^31 molecules of Ca? *

Answer 1

`150,000,000\text{ moles}`

Step-by-step explanation:

Here, we want to get the number of moles in the given number of molecules

Mathematically:

`1\text{ mole has 6.02 }*\text{ 10}^(23)\text{ molecules}`

The number of moles in the given number of molecules is thus:

`\begin{gathered} \frac{9.03*10^(31)\text{ molecules}}{1}*\frac{1\text{ mole}}{6.02\text{ }*\text{ 10}^(23)\text{ molecules}} \\ \\ =\text{ 150,000,000 moles} \end{gathered}`