Homework 6/21

13.

14. A) I, ii, iv, vi B) iii, v, iv

15. A chemical substance and an element.

16. A) Phosphoric Acid contains 3 hydrogen atoms, 1 phosphorus atom, and 4 oxygen atoms. B) Sodium Hydroxide contains 1 sodium atom, 1 oxygen atom, and 1 hydrogen atom. C) Sulfur Dioxide contains 1 sulfur atom, and 2 oxygen atoms.

 17.

 18. A) NaHCO3 + HCl → NaChl, H2O, CO2 B) C6H12O6 + O6 → CO2, H2O6