Question 10 of 34 > A sample of water, H2O, has a mass of 56.00 g. Calculate the number of water molecules in the sample.
number of molecules:
molecules

Moles of Water

Moles = mass ÷ molar mass

          = 56.00 g ÷ 18.015 g/mol

          = 3.1085 mol

Molecules of Water

Number of molecules = moles × Avogadro's Number

                                    =  3.1085 mol × (6.022 × 10²³ molecules/mol)

                                    =  1.872 × 10²⁴ molecules

Note: We could do all this calculation in one step but I separated it to make it clearer.

diaria maybe go see a doctor about that