A multivitamin tablet contains 40 milligrams of potassium. how many moles of potassium does each tablet contain?

Conversion of mole to grams

k in mole = 1 mole / atomic mass

K in mole = 1 / 39.0983 g/mole

= 0.255765 g/mole

converting 40 grams of K

K 40 grams x [ 1 mole / 39.0983 grams] = 1.0230623 mole

There are 1.0230623 moles of K in 40 K of Potassium