Question

How many atoms and moles are in 79g of potassium?

Answer 1

No. of grams of Potassium in 1 mole = 39 g

Mass Given = 79 g

No. of moles = 79/39

= 2.025

No. of atoms in 1 mole of Potassium = 6.022*10²³

No. of atoms in 2.025 moles of Potassium = (6.022*2.025) * 10²³

= 12.194*10²³

I hope this helps.