Multiple choice Which of the following has the largest number of molecules? 54 g of H2O 88 g of CO2 54 g of N2O5 30 g of NH3 64 g of CH3OH Reveal answer Fill a bubble to check yourself A Correct answer Explanation 54 g of H2O = 3 moles of H2O = 3 x 6.023 x 1023 molecules of H2O