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- Considering the following structures (I~V), answer the questions A-J. There may be more than one answer for a given questionRank the following groups in order of decreasing priority. a.−COOH, −H, −NH2, −OH b.−H, −CH3, −Cl, −CH2Cl c. −CH2CH3, −CH3, −H, −CH(CH3)2 d.−CH=CH2, −CH3, −C≡CH, −HRank the following groups in order of decreasing priority. −F, −NH2, −CH3, −OH
- A chemist determines that 4.20 L hydrogen at 298 K anda pressure of 1.00 atm is required to completely hydrogenate 48.5 g of the unsaturated compound oleic acid to stearic acid (C18H36O2). How many units of unsaturation (where a unit of unsaturation is one double bond) are in amolecule of oleic acid? (See Sec. 9.1.)Rank the following groups in order of decreasing priority. −CH=CH2, −CH3, −C≡CH, −HLinolenic acid (Table 10.2) and stearidonic acid are omega-3 fatty acids, unsaturated fatty acids that contain the first double bond located at C3, when numbering begins at the methyl end of the chain. Predict how the melting point of stearidonic acid compares with the melting points of linolenic and stearic acids. A current avenue of research is examining the use of soybean oil enriched in stearidonic acid as a healthier alternative to vegetable oils that contain fewer degrees of unsaturation.