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11 Nov 2019
only answer 1, 2, 4 & 5 2 EXPERIMENT 2 3 Pre-Lab Questions 1. The structures of the two main pigments, lycopene and β-carotene, are shown in the Background section. igments are examples of alkenes. What functional group present in these molecules allows for this classification? d these compounds dissolve in hexane, a nonpolar solvent, or water, a polar solvent? b. Woul Explain your answer. 2. You are asked to mark the chromatography paper with a pencil and not with a flair or ink pen. Why does this make a difference? 3. Why is bromine a good reagent to use in this experiment? 4. What is the "Re value"? How is it determined? 5. This experiment uses two systems of chromatography; name the two systems
only answer 1, 2, 4 & 5
2 EXPERIMENT 2 3 Pre-Lab Questions 1. The structures of the two main pigments, lycopene and β-carotene, are shown in the Background section. igments are examples of alkenes. What functional group present in these molecules allows for this classification? d these compounds dissolve in hexane, a nonpolar solvent, or water, a polar solvent? b. Woul Explain your answer. 2. You are asked to mark the chromatography paper with a pencil and not with a flair or ink pen. Why does this make a difference? 3. Why is bromine a good reagent to use in this experiment? 4. What is the "Re value"? How is it determined? 5. This experiment uses two systems of chromatography; name the two systems
Jean KeelingLv2
23 Jan 2019