1. Avogadro's Number

* Avogadro's number states that there are 6.022 x 10^23 particles (atoms, molecules, etc.) in one mole of a substance.

2. Calculation

* Divide the number of molecules by Avogadro's number:

(3.612 x 10^24 molecules H2O) / (6.022 x 10^23 molecules/mole) = 6.00 moles H2O

Answer: There are 6.00 moles of water (H2O) in 3.612 x 10^24 molecules.