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User Manual Chapter 1. CHEMICAL BALANCE Lesson 1. The concept of stoichiometry Lesson 2. Equilibrium in aqueous solution Chapter 2. NITROGEN AND SULFUR Lesson 3. Elemental nitrogen Lesson 4. Ammonia and some ammonium compounds Lesson 5. Some compounds with the oxygen of nitrogen Lesson 6. Sulfur and sulfur dioxide Lesson 7. Sulfuric acid and sulfate salts Chapter 3. GENERAL GENERAL OF ORGANIC CHEMICAL Lesson 8. Organic compounds and organic chemistry Lesson 9. Methods of separation and purification of organic compounds Lesson 10. Molecular formula of organic compounds Lesson 11. Chemical structure of organic compounds Chapter 4. HYDROCARBON Lesson 12. Alkanes Lesson 13. Hydrocarbons without it Lesson 14. Arene (Hydrocarbon) Chapter 5. HALOGEN -ALCOHOL-PHENOL DERIVATES Lesson 15. Halogen Derivatives Lesson 16. Alcohols Lesson 17. Phenols Chapter 6. CARBONYL(ALDEHYDE KETONE)-ONE CARBOXYLIC ACID Compounds Lesson 18. Compounds carbonyl Lesson 19. Carboxylic acid Terminology Explanation