Question

How many moles of aluminum do `6.3*10^-24` aluminum atoms represent?

Answer 1

`1.1*10^-47` moles

Explanation:

To solve this question you have to use Avogadro's constant which states that one mole of any element contains `6.022*10^23` atoms.

In the given example there are `6.3*10^-24` atoms, so the number of moles is:

`(6.3*10^-24 color(red)(cancel(color(black) "atoms"))) / (6.022*10^23 color(red)(cancel(color(black) "atoms"))/"mol") = 1.1*10^-47 "mol"`