21. During decarboxylation, which final step occurs after carbon dioxide has been lost? a. keto-enol tautomerism to give an enol product b. keto-enol tautomerism to give a keto product IF c. Nothing, loss of carbon dioxide directly generates the final enol product. d. Nothing, loss of carbon dioxide directly generates the final keto product. Page 142 Chapter 14 Carboxylic Acids and Carboxylic Acid Derivatives 22. In the Aldol Reaction what is the nucleophile and electrophile? a. A carbonyl group (aldehyde or ketone) is the nucleophile while an enolate is the electrophile. b. A carboxylate (conjugate base of an acid) is the nucleophile while an enolate is the electrophile. c. An enol is the nucleophile while an enolate is the electrophile. d. A carbonyl group (aldehyde or ketone) is the electrophile while an enolate is the nucleophile.

14. Your mom is washing the rice in the casserole pot before cooking it A. filtration B. decantation C. evaporation O D. magnetizing 15. Dr. Merle is getting some cash from his wallet. * A. decantation B. filtration C. evaporation D. handpicking 16. Mixtures can be separated in many ways. * A. True B. False

These are two separate questions.

During the production of pure iron, limestone and coke are used. What are their purposes? (Inorganic Chemistry)