Multiple choice The molar mass of water is given as 15.15 g/mol 18.02 g/mol 17.01 g/mol 12.03 g/mol Reveal answer Fill a bubble to check yourself B Correct answer Explanation The molar mass of water (H2O) is calculated by adding the atomic mass of oxygen (approx 16.00) and two hydrogen atoms (approx 2 x 1.01), totaling 18.02 g/mol.