Question

Calculate the number of molecules present in 0.750 mol of MgO

Answer 1

Hey there!

There are 6.022 x 10²³ molecules in 1 mole.

We have 0.750 moles, so multiply.

0.750 x 6.022 x 10²³ = 4.52 x 10²³

There are 4.52 x 10²³ molecules of MgO in 0.750 moles.

Hope this helps!