How many molecules are in 0.0310 mol NH3? Answer in units of molec.

Answer 1

Avogadro's Number tells us how many molecules there are in a mole of those molecules (6.022 x 10²³ molecules/mole). It is also the number of atoms of, say hydrogen, in a mole of hydrogen atoms or how many puppies there are in a mole of puppies, or anything else.

So 0.310 moles x (6.022 x 10²³ molecules/mole) = 1.87 x 10²³ molecules