How to calculate moles to atoms of aluminum

Question

How do I solve this question

how many moles are in 8.18x10^23 atoms of aluminum (A1) rounded 2 decimal

Answer 1

Hi Emily,

We can solve this problem using Avagadro's number, which states that there are 6.022e^23 of something (electrons, atoms, ions) per mol of that substance, to convert atoms to moles. We need to use dimensional anaylsis.

8.18e^23 atoms x (1 mol Aluminum/ 6.022e^23 atoms) = 1.36 moles of Aluminum.

Hope this helps!