1. Avogadro's Number
Avogadro's number tells us the number of particles (atoms, molecules, etc.) in one mole of a substance. It's approximately:
* 6.022 x 10²³ particles/mole
2. Calculation
* Step 1: Multiply the number of moles by Avogadro's number.
5.65 moles H₂O * (6.022 x 10²³ molecules/mole) = 3.40 x 10²⁴ molecules of water
Therefore, there are approximately 3.40 x 10²⁴ molecules of water in 5.65 moles of water.