Homework jaw2435 6 Walker (53985) This print-out should have 14 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. 001 1.0 points Name the organic compound CH3 F. 1. ammonium fluoride 2. fluoroethane 9. butene 3. methyl fluorate 4. fluoromethane correct 5. trifluoromethane 6. fluoropropane Explanation: To name alkanes in which one or more H atoms have been subsituted for halogens, find the number of carbon atoms and use this to get the original alkane. Then use Greek prefixes to indicate how many of each type of halogen has been substituted for H atoms. If more than one halogen is present, list them alphabetically with their separate prefixes. Place the original alkane name at the end. 002 1.0 points The ending -yne designates 1. a carbon-carbon triple bond. correct 2. a carbon-carbon single bond. 3. a carbon-carbon double bond. Explanation: 003 1.0 points What is the name of the organic compound CH3 CH2 CH3 ? 1. heptene 1. 2. None of these 3. butane O 4. heptane 5. pentene 6. pentane 7. propene 8. propane correct
1
Explanation: To name hydrocarbons, count the longest chain of carbon atoms and use the prefixes pent : five meth : one hex : six eth : two hept : seven prop : three oct : eight but : four To determine if the hydrocarbon is an alkane or alkene, draw the Lewis structures. A C C in the chain defines an alkene; absence of a C C or C C defines an alkane. 004 1.0 points How many structural isomers are possible for butanol? 1. two 2. one 3. four correct 4. three Explanation: 005 1.0 points
Aspirin is which of the following structures? O OH correct
CH3 O
jaw2435 Homework 6 Walker (53985) O 2. O OH 1.0 008 points Prostaglandins in excess cause 1. dry throat and swollen glands. CH3 2. sweet things to taste sour.
2
O
CH3 3.
3. fever, pain and inflammation. correct
O
O
4. the production of enkephalins. 5. the production phetamines. Explanation: of natural am-
OH
OH 4. O Explanation: 006 1.0 points Aspirin is an antipyretic, which means that it 1. controls acid in the stomach. 2. controls allergies. 3. relieves pain. 4. reduces fever. correct 5. has no side-effects. Explanation: 007 1.0 points Aspirin blocks the production of 1. steroids. CH3
009 1.0 points The fact that acetominophen is prescribed more frequently in hospitals than aspirin is probably due to the fact that acetaminophen is NOT 1. an anti-inflammatory. 2. an anticoagulant. correct 3. a synthetic. 4. an antipyretic. Explanation: 010 The functional group 1.0 points O RCOR 1. an alcohol. 2. a carboxylic acid. 3. an ether. is called
2. hormones. 4. an ester. correct 3. prostaglandins. correct 5. an amide. 4. glucose. Explanation: Explanation: RCOOR represents an ester.
jaw2435 Homework 6 Walker (53985) 2. a very high molecular weight. correct 011 1.0 points The organic compound CH3 CH2 CH3 is called 1. butane. 2. ethane. 3. pentane. 4. methane. 5. propane. correct Explanation: 012 1.0 points The functional group R OH is 1. an ester. 2. an alcohol. correct 3. a carboxylic acid. 4. an amine. 5. an amide. Explanation: Definition 013 1.0 points Proteins are examples of a 1. synthetic monomer. 2. synthetic polymer. 3. natural monomer. 4. None of these 5. natural polymer. correct Explanation: 014 1.0 points A polymer generally has 1. a very low molecular weight. 3. no molecular weight. Explanation:
3