Balance the following: 1. Potassium phosphate + magnesium oxide → magnesium phosphate + potassium oxide 2. Ammonia (NH3) + oxygen → nitrogen + water 3. Sodium chloride + sulfuric acid (H2SO4) → sodium sulfate + hydrochloric acid (HCl) 4. Fluorine + sodium hydroxide → sodium fluoride + oxygen + water 5. Magnesium nitrate + calcium iodide → calcium nitrate + magnesium iodide 6. Aluminum sulfate + ammonium bromide → aluminum bromide + ammonium sulfate 7. Potassium fluoride + barium bromide → barium fluoride + potassium bromide 8. Copper (II) nitrate + ammonium hydroxide → copper (II) hydroxide + ammonium nitrate 9. Sodium nitrate → sodium nitrite + oxygen 10. Lead (II) hydroxide → lead (II) oxide + water 11. Ammonia (NH3) + sulfuric acid (H2SO4) → ammonium sulfate 12. Hydrochloric acid (HCl) + ammonia (NH3) → ammonium chloride 13. Copper (II) sulfate + iron → iron (II) sulfate + copper