Key Concepts:
* Avogadro's Number: One mole of any substance contains 6.022 x 10^23 particles (atoms, molecules, etc.). This number is known as Avogadro's constant.
Calculation:
1. Start with the number of moles: You have 7 moles of sodium (Na).
2. Multiply by Avogadro's number:
7 moles Na * (6.022 x 10^23 atoms Na / 1 mole Na) = 4.2154 x 10^24 atoms Na
Answer: There are approximately 4.2154 x 10^24 atoms of sodium in 7 moles of sodium.
