Understanding the Concepts
* Avogadro's Number: One mole of any substance contains 6.022 x 10²³ particles (atoms, molecules, etc.). This number is known as Avogadro's number.
Calculation
1. Divide by Avogadro's Number: To find the number of moles, divide the number of atoms by Avogadro's number:
(280 x 10²⁴ atoms) / (6.022 x 10²³ atoms/mol) ≈ 465.1 moles
Answer: There are approximately 465.1 moles of silicon in 280 x 10²⁴ atoms.
