Understanding the Key Concepts
* Mole: A mole is a unit of measurement used in chemistry. It represents a specific number of particles (atoms, molecules, ions, etc.). One mole contains 6.022 x 10^23 particles (Avogadro's number).
* Water Molecule (H₂O): A water molecule is composed of two hydrogen atoms and one oxygen atom.
Calculation
1. Start with the number of moles: You have 15 moles of water.
2. Multiply by Avogadro's number: 15 moles * (6.022 x 10^23 molecules/mole) = 9.033 x 10^24 molecules
Answer: 15 moles of water contain 9.033 x 10^24 molecules.
