Q&A Hero

Q: What is the H-C-H bond angle? A) 90 B) 109.5 C) 120 D) 180

Q: Which one of the following molecules is the most polar? A) acetaldehyde B) acetic acid C) ethane D) ethylene

Q: What are the products of acid-catalyzed hydrolysis reaction of amides and water? A) an alcohol and an alkane B) an amine and a ketone C) a carboxylic acid and an amine salt D) an ester and an ether

Q: Which one of the following behaves like a base? A) CH3CONHCH3 B) (CH3)2NH C) C2H5CONHCH3 D) All of these are bases.

Q: What is the name of the product formed by the reaction of butanoic acid with methylamine? A) N-methylbutamide B) N-methylbutanamide C) pentanone D) pentyl amine

Q: The reaction of an amine and a carboxylic acid produces what kind of compound? A) alcohol B) amide C) ester D) ketone

Q: Which statement about the differences between an amine and an amide is not correct? A) Amides act as proton acceptors while amines do not. B) Amines are basic and amides are neutral. C) Amines form ammonium salts when treated with acid; amides do not. D) The lone pair of electrons on amides is held more tightly than the lone pair on an amine.

Q: Which ester below formed propanoic acid and isopropyl alcohol by hydrolysis reaction with water? A) B) C) D)

Q: What are the products of a hydrolysis reaction of an ester? A) an alcohol and an alkane B) a carboxylic acid and an alcohol C) an ether and an alkene D) a ketone and an aldehyde

Q: What is the name of the product formed by the reaction of propanoic acid with ethanol? A) ethyl propanoate B) pentanone C) pentyl ester D) ethylpropylketone

Q: What type of compound is formed when a carboxylic acid reacts with an alcohol? A) an aldehyde B) an amide C) an aromatic D) an ester

Q: How many grams of Ca(OH)2 are needed to neutralize 5.00 g of 3-methylbutanoic acid? A) 1.81 g B) 2.10 g C) 3.63 g D) 4.20 g

Q: Which one of the following behaves like an acid? A) CH3COCH3 B) (CH3)2NH C) C2H5OH D) C2H5COOH

Q: Which of the following pairs have the most similar chemical properties? A) alkanes and carboxylic acids B) alkenes and aromatics C) amines and esters D) ketones and aldehydes

Q: Which one of the following does not contain a polar carbonyl group? A) an amine B) a carboxylic acid C) an ester D) a ketone

Q: Which of the following does not contain a carbonyl group? A) an alcohol B) an aldehyde C) an amide D) an ester

Q: Which of the following molecules is the most highly oxidized? A) acetaldehyde B) acetic acid C) ethanol D) 1, 2-ethanediol

Q: What is the common name for the simplest ketone, propanone? A) acetal B) acetone C) carbanone D) formalin

Q: What compound is formed by the oxidation of 2-butanol? A) butanal B) butanoic acid C) 2-butanone D) 2-butene

Q: The H-C-H bond angles in acetic acid, shown below, are closest toA) 90.B) 109.5.C) 120.D) 180.

Q: The C-C=O bond angle in acetic acid, shown below, is closest toA) 90.B) 109.5.C) 120.D) 180.

Q: What type of compound contains the -NH2 functional group? A) alcohol B) amine C) carboxylic acid D) ether

Q: How many ether isomers have the formula C4H10O? A) 2 B) 3 C) 4 D) 5

Q: Which of the following compounds is most soluble in water? A) decanol B) dimethyl ether C) ethane D) ethanol

Q: "Glycerol" is the common name for A) ethanol. B) 2-propanol. C) 1, 2-ethanediol. D) 1, 2, 3-propanetriol.

Q: "Rubbing alcohol" is the common name for A) methanol. B) ethanol. C) 2-propanol. D) 1, 2-ethanediol.

Q: "Wood alcohol" is the common name for A) methanol. B) ethanol. C) 2-propanol. D) 1, 2-ethanediol.

Q: What is the proper name for (CH3)2CHCH(OH)CH3? A) isopropanol B) isopentanol C) 2-methylpentanol D) 3-methyl-2-butanol

Q: The boiling point of 1-propanol should be ________ than the boiling point of methyl ethyl ether. A) higher than B) lower than C) the same as D) cannot be determined

Q: Which of the following statements about amines is not correct? Amines are A) bases (proton acceptors). B) converted to ammonium salts by reaction with HCl. C) organic derivatives of ammonia. D) very water soluble.

Q: Which structure is para-dibromobenzene? A) structure I B) structure II C) structure III D) structure IV

Q: Which structure is meta-dibromobenzene? A) structure I B) structure II C) structure III D) structure IV

Q: Which structures represent the same dibromobenzene compound? A) I and IV B) II and III C) I, II, and III D) All structures are identical.

Q: Which reaction is not characteristic of aromatic compounds? A) addition B) halogenation C) nitration D) sulfonation

Q: What type of hybridization does a carbon atom have in a six-membered aromatic ring? A) sp B) sp2 C) sp3 D) sp3d

Q: Which of the following statements about benzene is true? Benzene A) contains 3 long bonds and 3 short bonds. B) is a puckered, six-membered ring. C) is unusually stable because of delocalized pi electrons. D) readily undergoes addition reactions.

Q: Which compound is not an isomer of the other three? A) cyclohexane B) 1, 2-dimethylcyclobutane C) 1, 2-dimethylcyclopropane D) methylcyclopentane

Q: Which name is not correct? A) 1, 1 dimethylcyclobutane B) 1, 2-dimethylcyclobutane C) 1, 3-dimethylcyclohexane D) 1, 4-dimethylcyclopentane

Q: What are the C"C"C bond angles in cyclopropane and cyclohexane? A) 60 in both molecules B) 60 in cyclopropane and 109.5 in cyclohexane C) 60 in cyclopropane and 120 in cyclohexane D) 109.5 in both molecules

Q: The cycloalkane represented by a square is called ________ and has the molecular formula ________. A) cyclopropane, C3H6 B) cyclopropane, C3H8 C) cyclobutane, C4H4 D) cyclobutane, C4H8

Q: Which of the following statements about cycloalkanes is true? A) The bonds in cyclopropane and cyclobutane are weaker than other cycloalkanes. B) Cycloalkanes are also called "acyclic" compounds. C) Cyclopropane has 109 bond angles. D) Most cycloalkanes are planar molecules.

Q: In the addition reaction of water and propene in an acidic solution, the product is ________. A) an alcohol B) a carboxylic acid C) an ether D) a ketone

Q: What is the product when pure water and ethene are mixed? A) an alcohol B) a carboxylic acid C) an ether D) no reaction occurs

Q: Name the product obtained from the addition of bromine to 3-methyl-1-butene. A) 1, 1-dibromobutane B) 1, 2-dibromo-3-methylbutane C) 1, 2-dibromopentane D) trans-1, 2-dibromobutene

Q: Hydrogenation of vegetable oils converts them into what type of molecule? A) esters B) ethers C) polymers D) saturated fats

Q: Name the product of hydrogenation of trans-2-pentene. A) pentane B) cis-2-pentene C) trans-2-pentane D) none of these

Q: The most important synthetic chemical reactions that alkenes and alkynes undergo are called A) addition reactions. B) combustion reactions. C) photochemical halogenation reactions. D) substitution reactions.

Q: Which compound will exhibit cis-trans isomerism? A) 1, 2-dichloroethane B) 1, 2-dichloroethene C) dichloroethyne D) ethylene

Q: Which of the following is a correct name for an alkyne? A) 3-methyl-2-pentyne B) 5-methyl-3-pentyne C) 2, 2-dimethyl-4-pentyne D) 3, 3-dimethyl-1-pentyne

Q: What is the name of the following structure? A) tert-butylethyne B) 3, 3-dimethyl-1-pentyne C) 3-ethyl-3-methyl-1-butyne D) trans-ethylmethylbutyne

Q: What is the name of the following structure? A) cis-1-ethyl-2-chloroethane B) cis-1-chloro-1-butene C) trans-1-chloro-1-butene D) trans-1-chloro-2-ethylethane

Q: Which of the following is trans-2-butene? (Only bonds are shown in the skeletal structures below; the carbon and hydrogen atoms are deleted.) A) structure a B) structure b C) structure c D) none of these

Q: Which of the following is not a geometric (cis-trans) isomer? A) 1, 1-dichloro-1-butene B) 1, 2-dichloro-1-butene C) 2-butene D) 2-chloro-2-butene

Q: Which compound will have the largest dipole moment? A) cis-1, 2-dichloroethylene B) trans-1, 2-dichloroethylene C) tetrabromoethylene D) tetrachloroethylene

Q: How many geometrical and structural isomers are there of butene? A) 3 B) 4 C) 5 D) 6

Q: Which one of the following molecules can rotate freely around its carbon-carbon bond? A) acetylene B) cyclopropane C) ethane D) ethylene

Q: Which of the following statements about cis-trans isomers is not correct? A) Conversion between cis- and trans-isomers occurs easily by rotation around the double bond. B) In the trans- isomer, the groups of interest are on opposite sides across the double bond. C) In the cis- isomer, the groups of interest are on the same side of the double bond. D) There are no cis-trans isomers in alkynes.

Q: Which of the molecules shown below are unsaturated?A) All are unsaturated.B) Only (2) and (3) are unsaturated.C) Only (2) is unsaturated.D) Only (3) is unsaturated.

Q: What is the molecular geometry around the carbon in indicated by theasterisk (*)?A) linearB) trigonal planarC) trigonal pyramidalD) tetrahedral

Q: What is the hybridization of the carbon in indicated by the asterisk (*)?A) spB) sp2C) sp3D) dsp3

Q: None of the listed compounds contains a ring. Which has at least one singly-bonded carbon atom? A) C2H6 B) C3H4 C) C4H8 D) All of these

Q: None of the listed compounds contains a ring. Which has at least one triply-bonded carbon atom? A) C2H6 B) C3H4 C) C4H8 D) All of these

Q: None of the listed compounds contains a ring. Which has at least one doubly-bonded carbon atom? A) C2H6 B) C3H4 C) C4H8 D) All of these

Q: What class of hydrocarbons has the general formula CnH2n? A) alkanes B) alkenes and cycloalkanes C) alkynes D) aromatics

Q: The names of compounds with carbon-carbon double bonds contain the suffix ________. A) -ane B) -ene C) -yne D) -one

Q: Which name is not correct? A) 2, 2-dimethylbutane B) 2, 3-dimethylpentane C) 2, 3, 3-trimethylbutane D) 2, 3, 3-trimethylpentane

Q: Which name is not correct? A) 1, 2-dichloropentane B) 2, 3-dimethylbutane C) 2-ethylbutane D) 4-propylheptane

Q: Which of the following compounds is 5-ethyl-4-isopropyl-2-methylnonane? A) B) C) D)

Q: 201Tl is used in myocardial perfusion imaging. It undergoes beta decay with a half-life of 73 hours generating 80 keV X-rays. A typical dose is 2.5 mCi which is equal to ________ Bq.

Q: An average person receives 40 mrem of radiation from medical procedures annually. If a dose as low as 25 rem can lead to a decrease in white blood cell count, what is the maximum number of medical procedures that involve radiation allowable before white blood cell count decrease occurs?

Q: Human bones found on the west coast of the United States were thought to be remains of a prospector who lived in the 19th century. The bones were subjected to carbon-14 dating. Carbon-14 has a half-life of 5715 years. Living organisms decay at a rate of 15.3 disintegrations per minute per gram of carbon. The bones had a carbon-14 decay rate of 5.13 disintegrations per minute per gram of carbon. To one significant figure the age of the bones is ________ years old, so the person ________ (did, did not) live in the 19th century.

Q: Carbon-14 has a half-life of 5715 years. Currently living organisms decay at a rate of 15.3 disintegrations/ min per gram of carbon. If an archeological artifact has a carbon-14 decay rate of 12.0 disintegrations/ min per gram of carbon, the approximate age of the artifact is ________ years old.

Q: Radiocarbon dating involves the unbalanced equation shown below. Needed to balance this equation is ________. This is an example of ________ decay.

Q: Among the types of radiation, and X, the one that requires the least amount of protective clothing is ________ radiation.

Q: Units used for measuring radiation include the becquerel, the curie, the gray, and the sievert, which have the abbreviations ________, ________, ________, and ________, respectively.

Q: What is needed to balance the nuclear transmutation reaction below?

Q: In the transmutation reaction that results in the formation of berkelium-243, shown below, the nucleus that is bombarded by alpha particles is ________.

Q: What is needed to balance the nuclear fusion reaction below?

Q: What is needed to balance the nuclear fission reaction below?

Q: The two reactions shown below are classified as (1) nuclear ________ and (2) nuclear ________.