Fingernail—polish remover is primarily acetone (C3H6O). How many acetone molecules are in a bottle of acetone with a volume of 325 mL? (density of acetone = 0.788 g/cm3)
The volume of acetone (C3H6O) = 325 mL
The density of acetone is 0.788 g/cm3,
the mass m =density volume = 0.788 325 = 256.1
The molar mass of acetone is 58.08g/mol.
One mole = 6.02 1023 molecules.
Then the conversion of grams into number of atoms = 256.1 g 58.08g 6.02 1023 molecules
= 2.65 1024 molecules.