12.04 E23 molecules of barium chloride represents _____ moles of this substance?

Question

12.04 E23 molecules of barium chloride represents _____ moles of this substance?

Answer 1

1 mole of any compound contains 6.022x10^23 molecules. This is called avagadro's number.

So the number of moles in your sample

= number of molecules in sample / number of molecules in 1 mole

= 12.04x10^23 / 6.02 x 10^23

= 2 moles