Question

How many moles are present in 4amu of He?

Answer 1

The answer is one half of a mole, because 1 mole is equal to 6.02 x 1023, so a half of a mole would be equal to 3.01 x 1023 atoms. Okay, so if it contains 0.5 moles of calcium atoms, how much mass would that have? The answer is about 20 grams