Stoichiometry Tic-Tac-Toe James

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Across
  1. 2. F
  2. 4. 6.022x10^23 (Avogadro's number)
  3. 6. Cl
  4. 8. H
  5. 11. Ag
  6. 12. K
  7. 15. Be
  8. 16. Br
  9. 17. O
  10. 18. Ba
  11. 20. Cu
  12. 21. Au
Down
  1. 1. I
  2. 3. chemical formula that finds the max number of product that can be obtained
  3. 5. found under an element on the periodic table
  4. 7. N
  5. 9. Al
  6. 10. Ca
  7. 13. C
  8. 14. chemical formula that shows the simplest ratio
  9. 19. Fe