How many total atoms are in 1.0 moles of H2O ?

Answer 1

There are 6.02 x 10^23 molecules of H2O is 1 mole of H2O molecules. There are two atoms H and 1 atom O in 1 MOLECULE H2O (NOT MOLE); therefore, there are 3 x 6.02 x 10^23 = 18.06 x 10^23 or 1.806 x 10^24 atoms of H + atoms O in 1 mole H2O.