Understanding the Key Concepts
* Mole: A mole is a unit of measurement used in chemistry to represent a specific number of particles (atoms, molecules, ions, etc.). One mole contains 6.022 x 10²³ particles, also known as Avogadro's number.
* Avogadro's Number: This constant represents the number of particles in one mole of any substance.
Calculation
1. Start with the number of moles: You have 0.2 moles of aluminum.
2. Multiply by Avogadro's Number:
0.2 moles Al * (6.022 x 10²³ atoms Al / 1 mole Al) = 1.2044 x 10²³ atoms Al
Answer: There are approximately 1.2044 x 10²³ atoms of aluminum in 0.2 moles of aluminum foil.
