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Unformatted text preview: irannezhad (mi2923) Homework 2 sathasivan (48985) 1 This print-out should have 15 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. 001 10.0 points Consider the molecule R C O O H What is its functional group? 1. acetyl 2. carbonyl 3. carboxyl correct 4. dehydroxyl 5. methyl Explanation: Factual recall 002 10.0 points A compound contains a carboxyl group as its predominant functional group. Which of the following statements is true concerning this compound? 1. It is an acid. correct 2. It should be a base. 3. It is probably a lipid. 4. It should donate a hydroxyl group to the solution. 5. It should dissolve in a non-polar solvent. Explanation: Compounds with a carboxylic group are acids. 003 10.0 points The molecular mass of glucose is 180 and that of NaOH 40. Which solution contains 100 mM glucose and 10 mM NaOH? 1. one liter solution containing 180 g of glu- cose and 4 g of NaOH 2. one liter solution containing 180 g of glu- cose and 40 g of NaOH 3. 100 mL solution containing 180 g of glu- cose and 40 g of NaOH 4. one liter solution containing 18 g of glu- cose and 400 mg of NaOH correct 5. two liter solution containing 18 g of glu- cose and 4 g of NaOH Explanation: 004 10.0 points One liter of coke with pH 3 has how many more H + ions than 1 L mango juice with pH...
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