chem practice test
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chem practice test

Course: BIOL 1361-1362, Spring 2011

School: U. Houston

Word Count: 1197

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View Attempt Page 1 of 8 View Attempt 1 of 1 Title: Practice Test 1 Started: February 18, 2008 10:36 PM Submitted: February 18, 2008 11:31 PM Time spent: 00:55:06 Total score: 16/20 = 80% 1. Total score adjusted by 0.0 Maximum possible score: 20 IMF in solution 50 What is the strongest form of intermolecular force between solute and solvent in a solution of C2H6(g) in benzene, C6H6(l)? Student Value...

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Attempt Page View 1 of 8 View Attempt 1 of 1 Title: Practice Test 1 Started: February 18, 2008 10:36 PM Submitted: February 18, 2008 11:31 PM Time spent: 00:55:06 Total score: 16/20 = 80% 1. Total score adjusted by 0.0 Maximum possible score: 20 IMF in solution 50 What is the strongest form of intermolecular force between solute and solvent in a solution of C2H6(g) in benzene, C6H6(l)? Student Value Response Correct Answer Feedback 1. ion-dipole 0% 2. dipoledipole 0% 3. hydrogen 0% bonding 4. dipoleinduced dipole 0% 5. dispersion 100% Score: 2. 1/1 Relative Solubility 22 Which of the following is more soluble in water, methanol or CBr2H2(l). Don't try to type the subscripts, just use letters and numbers. Student Response 1. CH3OH Score: 3. Value Correct Answer 0% Equals methanol (100%) 0/1 Chapter 8 Molality 7 Determine the molality of a solution prepared by dissolving 9.78 g of cycloheptane in 71.3 g of benzene. Student Response Answer .140 Value Correct Answer 0% 1.40 http://scholar.uh.edu/webct/urw/lc179937921.tp179937934/ViewStudentAttempt.dowebct... 2/18/2008 View Attempt Score: 4. Page 2 of 8 0/1 Chapter 8 PC to Molar 1 A 4.20 mass % aqueous solution of sodium chloride has a density of 1.00 g/mL. Calculate the molarity of the solution. Student Response Score: 5. Correct Answer 100% Answer .7186 Value 0.72 1/1 Ionic Dissociation 1 Describe sodium permanganate (NaMnO4) as a strong electrolyte, weak electrolyte,or nonelectrolyte. Student Response Score: 6. Correct Answer 100% 1. strong Value Equals strong electrolyte (100%) Equals strong (100%) 1/1 General Properties Comparison 3 Consider the solutions, 0.04 m urea [(NH2)2C=O)], 0.04 m AgNO3 and 0.04 m CaCl2. Which has (i) the highest osmotic pressure, (ii) the highest vapor pressure, (iii) the highest boiling point? Student Value Correct Answer Feedback Response 1. (a) 0.04 m CaCl2 0% (b) 0.04 m CaCl2 (c) 0.04 m CaCl2 2. (a) 0.04 m CaCl2 100% (b) 0.04 m urea (c) 0.04 m CaCl2 3. (a) 0.04 m urea 0% http://scholar.uh.edu/webct/urw/lc179937921.tp179937934/ViewStudentAttempt.dowebct... 2/18/2008 View Attempt Page 3 of 8 (b) 0.04 m CaCl2 (c) 0.04 m urea 4. (a) 0.04 m CaCl2 100% (b) 0.04 m urea (c) 0.04 m urea 5. all will be 0% the same Score: 7. 0/1 Chapter 8 VP 4 Calculate the vapor pressure (in torr) at 310 K in a solution prepared by dissolving 18.2 g of the non-volatile non-electrolye sucrose in 123 g of water. The vapor pressure of water at 310 K is 47.08 torr. Student Response Score: 8. Correct Answer 100% Answer 46.716 Value 46.72 1/1 Chapter 8 MM fp 9 When 1.58 g of an unknown non-electrolyte is dissolved in 50.0 g of acetone, the freezing point decreased to -94.07 degrees C from -93.4 degrees C. If the Kfp of the solvent is 2.4 K/m, calculate the molar mass of the unknown solute. Student Response Score: 9. Correct Answer 100% Answer 113.194 Value 113 1/1 Calculate k from Rate Law 34 Given the data below for the reaction, 2 A + 2 B + 4 C => D + E + 3 F, the reaction is [second] order in A, [first] order in B, [first] order in C and [fourth] order overall. USE WORDS TO FILL IN THE BLANKS NOT NUMBERS (i.e., zero, first, second etc) !!!!! : Experiment Initial conc of A, mol/L Initial conc of B, mol/L Initial conc of C, mol/L Initial rate, mol/L.s 1 0.1 0.2 0.4 2 x 10-3 http://scholar.uh.edu/webct/urw/lc179937921.tp179937934/ViewStudentAttempt.dowebct... 2/18/2008 View Attempt Page 4 of 8 2 0.2 0.2 0.4 8 x 10-3 3 0.3 0.4 0.4 3.6 x 10-2 4 0.4 0.6 0.2 4.8 x 10-2 Calculate the value of k to 3 significant figures. Student Response Score: Correct Answer 0% 1. 2.5 Value Equals 2.50 (100%) 0/1 10. Determine Rate Law 41 Given the data below for the reaction, 2 A + 2 B + 4 C => D + E + 3 F, the reaction is 1.----order in A, 2.----- order in B, 3.----- order in C and 4.----- order overall. USE WORDS TO FILL IN THE BLANKS NOT NUMBERS (i.e., zero, first, second etc) !!!!! : Experiment Initial conc of A, mol/L Initial conc of B, mol/L Initial conc of C, mol/L Initial rate, mol/L.s 1 0.1 0.2 0.4 2 x 10-3 2 0.2 0.2 0.4 2 x 10-3 3 0.3 0.4 0.4 4 x 10-3 4 0.4 0.6 0.2 1.5 x 10-3 Student Response Value Correct Answer 1. zero 25% Equals zero (25%) 2. first 25% Equals (25%) 3. first second 25% Equals second (25%) 4. third 25% Equals third (25%) Score: 1/1 11. Arrhenius k 1 set of conditions 1 A first order reaction has an activation energy of 56.2 kJ/mol and a frequency factor (Arrhenius constant) of 4.35 x 1013 sec -1. Calculate the rate constant at 16 oC. Student Response Answer 3025.27 Score: Value Correct Answer 100% 3,023 1/1 http://scholar.uh.edu/webct/urw/lc179937921.tp179937934/ViewStudentAttempt.dowebct... 2/18/2008 View Attempt Page 5 of 8 12. IRL 1 c 2 A reaction has a rate constant of 0.0836 sec-1, how much of the compound (in mol/L) is left after 4.44 sec, if there was 0.146 mol/L at the start? (give answer to 3 sig figs using E notation)? Student Response Score: Correct Answer 100% Answer .1007 Value 0.101 1/1 13. IRL 1 t 7 A reaction has a rate constant of 0.708 sec-1, how long will it take (in seconds) until 0.186 mol/L of the compound is left, if there was 0.562 mol/L at the start? (give answer to 3 sig figs using E notation)? Student Response Score: Correct Answer 100% Answer 1.56 Value 1.562 1/1 14. Mechanism and Rate Law 9 The proposed mechanism for a reaction is NO + O3 => NO3 + O Slow NO3 + O => NO2 + O2 Fast Which of the following would be a rate law for the reaction? Student Value Correct Answer Feedback Response 1. rate = k 100% [NO][O3] 2. rate = k [O3] 0% 3. rate = k [NO] 0% 4. rate = k 0% [O][NO3] 5. rate = k [NO2] 0% http://scholar.uh.edu/webct/urw/lc179937921.tp179937934/ViewStudentAttempt.dowebct... 2/18/2008 View Attempt Page 6 of 8 [O2] Score: 1/1 15. Mechanism Molecularity 8 The proposed mechanism for a reaction is 1.Cl2 + H2S => HCl + Cl+ + HS- Slow 2. Cl+ + HS- => HCl + S Fast What is the molecularity of step 2? Student Response Value Correct Answer Feedback 1. unimolecular 0% 2. bimolecular 100% 3. trimolecular 0% 4. impossible 0% to tell without knowing which is the slow step Score: 1/1 16. Known Rate Law Change Conc 56 For the reaction, A(g) + B(g) => AB(g), the rate is 0.394 mol/L.s when the initial concentrations of both A and B are 2.00 mol/L. If the reaction is first order in A and second order in B, what is the rate when the initial concentration of A = 4.76 mol/L and that of B = 1.36 mol/L (give answers in E notation to 3 significant figures) Student Response Answer 4.34E-1 Score: Value Correct Answer 100% 0.43 1/1 17. Chapter 5 IMF 27 Which type of intermolecular force ("interparticle force") is the most important in BCl3(l)? http://scholar.uh.edu/webct/urw/lc179937921.tp179937934/ViewStudentAttempt.dowebct... 2/18/2008 View Attempt Page 7 of 8 Student Value Response Correct Answer Feedback 100% 1. London Dispersion 2. Dipoledipole forces This is a non-polar molecule. 0% 3. Ion-dipole 0% forces 4. Hydrogen 0% bonds 5. Ionic bonds Score: 0% 1/1 18. Chapter 5 IMF 58 Which type of intermolecular force ("interparticle force") is the most important in SO2(l)? Student Value Response Correct Answer Feedback 1. London 0% Dispersion 2. Dipoledipole forces 100% This is a polar molecule. 3. Ion-dipole 0% forces 4. Hydrogen 0% bonds 5. Ionic bonds Score: 0% 1/1 19. Chapter 5 Phys Props 19 Which of the following substances would be expected to have the lowest heat of vaporization? Student Value Correct Answer Feedback Response 1. methane 100% For similar substances, lightest ones have the lowest heat of vaporization http://scholar.uh.edu/webct/urw/lc179937921.tp179937934/ViewStudentAttempt.dowebct... 2/18/2008 View Attempt Page 8 of 8 2. CF4 0% 3. CCl4 0% 4. CBr4 0% 5. CI4 0% Score: 1/1 20. Phase Change enthalpies 2 What is the heat change in J associated with 20.3 g of liquid water at 5.00 C changing to solid water at -5.00 C? c(H2 O) (liq) = 4.184 J/(g.K) c(H2O) (s) = 2.09 J/ (g.K) Hfus(H2 O) = 6.02 kJ/mol Enter your answer in scientific format with TWO DECIMAL PLACES (that is, 3 significant figures total): 1.23X104 =1.23E4. Do not include units. You will not get credit for the question if you do not use the correct format!!! Student Response Answer -7.42E3 Score: Value Correct Answer 100% -7.42E3 (-7.42 103) 1/1 Done http://scholar.uh.edu/webct/urw/lc179937921.tp179937934/ViewStudentAttempt.dowebct... 2/18/2008

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U. Houston - BIOL - 1361-1362
View AttemptPage 1 of 7View Attempt 1 of 1Title:Exam 1Started:February 19, 2008 4:24 PMSubmitted:February 19, 2008 5:26 PMTime spent:01:01:50Total score: 17/20 = 85%Total score adjusted by 0.0Maximum possible score: 201.What is the stronges
U. Houston - BIOL - 1361-1362
1332 SPRING 2008FINAL EXAMNO CHEATING1.Of the gases, Ne, N2, O2, CH4 and SiH4, which one would you expect to be easiest to liquefy?(A)Ne2.What is the amount of heat absorbed by 10.0 grams of ice at -150 oC in coverting it to liquid water at 50.0 o
U. Houston - BIOL - 1361-1362
Practicequestionsrepresentativeofthosethatwillbeincludedinexam21.WhichofthefollowingisNOTanexampleofaphenomenonshowingepigeneticinheritance?a.Positioneffectvariegationb.Cataboliterepressionc.Xinactivationd.Paternalimprintinge.Maternalimprinting2.
U. Houston - BIOL - 1361-1362
U. Houston - BIOL - 1361-1362
Biol 3301 Exam #2October 27, 2009GreenThis exam consists of 27 questions worth a total of 100 points. Allquestions are multiple choice and there is ONE best answer for eachquestion. Record your answers on the scantron sheet answer onlyonce for each
U. Houston - BIOL - 1361-1362
Print TestPage 1 of 12PRINTABLE VERSIONTest 2 (11843)You scored 35 out of 100Question 1Your answer is INCORRECT.A reciprocal translocation was discovered in a wild species of maize. The standard gene order was: N1: a * b c d e f and N2: s * t u v (
U. Houston - BIOL - 1361-1362
!"#$%&'()*+',-./)%()0%-'/+1*,)2%34',5&6*%1&%(78%+6(-&1'%9:%!"#$%&'()*+',-./)%()0%-'/+1*,)2%34',5&6*%1&%(78%+6(-&1'%9:%;/<%0/1*%&61%*&'=+&='1%/>%!"#%0,?1'%>'/@%A"#B%;/<%0/1*%&'()*+',-./)%,),.(&1%C%17/)2(&1%C%&1'@,)(&1B%;/<%('1%-'/D('E/.+%()0%1=D('E/.+%
U. Houston - BIOL - 1361-1362
L ectu re 16 of T uesday 10-19-10 is pa r t ofc hapter 12 and w ill be on exam 2.(Lecture 17 of Thursday 10-21-10 is part of chapter13 and will be on exam 3)
U. Houston - BIOL - 1361-1362
Genomes and GenomicsHuman chromosomes range in length from51 million to 245 million base pairs.If all the bases in the human genome werespread out 1 millimeter apart, they wouldextend from Memphis to Los Angeles.The human nuclear genome viewed as a
U. Houston - BIOL - 1361-1362
!"#$%&'()*'+)$,%&")(-'$,%(&()./"&0$,()%$)*12)3,*4$%")56)!"#$%&'()*'+)$,%&")(-'$,%(&()./"&0$,()%$)*12)3,*4$%")56)7,*$)&()8$,%)/%'%93):#+%;<)=#>)+#%()&$)>#"?)*'+),#>)+#)>%)?'#><)=#>)+#)"&@#(#A%()$"*'(1*$%)ABCD)$#)4"#$%&'<)$,%)3%'$"*1)+#EA*F)!"#$%&'()
U. Houston - BIOL - 1361-1362
!"#$%&#%'()*($(%+,)-*./0&1,)(&)#23)+1#4&(.)567)@94"2#%9$)>($(%+,)How variable are populations?How does variation in populations arise and get maintained?What are the consequences of population-level variation?89,&)9:)&1()&94/+,)+9'(.(;)&9)&1/,)49/$&)
U. Houston - BIOL - 1361-1362
!"#$%&'()*(+*#")"*",-."/0()*0)*1&23".0&*&)4*35"0.*60.$/"/*78.0935/*"3*&%:*25&-3".*;<=*!"#$%&'()*(+*#")"*",-."/0()*0)*1&23".0&*&)4*35"0.*60.$/"/*78.0935/*"3*&%:*25&-3".*;<=*>(?*&."*#")"/*."#$%&3"4@*7(-".&3(./:*3.&)/2.0-'()*+&23(./:*-(/0'6":*)"#&'6":*3.&
U. Houston - BIOL - 1361-1362
Control of eukaryotic gene transcriptionGround state is off requirement for activatorsPromoter region usually contains many binding sites for transcription factors andenhancersBesides basal promoter elements like TATA box at -30 and CCAT box around -8
U. Houston - BIOL - 1361-1362
!!"#$%&'$!()!$*+&$(&,!-')./&0$1!234-(&'$!56781!234-(&'!5!!!!!!!!!234-(&'!9!!!!!!!!!234-(&'!:1!!!!
U. Houston - BIOL - 1361-1362
BIOL 3301The following list of problems is taken from the course text book:Introduction to Genetic Analysis 9th edition. The solutions to theseproblems require information, ideas, or skills that I wish you tounderstand. Exam questions may resemble any
U. Houston - BIOL - 1361-1362
Practice questions representative of those that will be included in exam 2. 1. What is the name of the enzyme that, during DNA replication, extends the lagging strand from the 3 end of each RNA primer? A. DN
U. Houston - BIOL - 1361-1362
Biol 3301 Exam 2 Afternoon BlueOctober 30, 2008There are a total of 9 pages in this exam. This exam consists of 42 questions worth atotal of 100 points. All questions are multiple choice and there is one best answer foreach question. Record your answe
U. Houston - BIOL - 1361-1362
Biol 3301 Exam 2 Afternoon GreenOctober 30, 2008There are a total of 9 pages in this exam. This exam consists of 42 questions worth atotal of 100 points. All questions are multiple choice and there is one best answer foreach question. Record your answ
U. Houston - BIOL - 1361-1362
Biol 3301 Exam 2October 30, 2008Morning RedThere are a total of 9 pages in this exam. This exam consists of 42 questions worth atotal of 100 points. All questions are multiple choice and there is one best answer foreach question. Record your answers
U. Houston - BIOL - 1361-1362
Biol 3301 Exam 2October 30, 2008Morning YellowThere are a total of 9 pages in this exam. This exam consists of 42 questions worth atotal of 100 points. All questions are multiple choice and there is one best answer foreach question. Record your answe
U. Houston - BIOL - 1361-1362
1. Which of the following is NOT a difference between RNA and DNA? a. Sugar ribose vs. deoxyribose b. 2-OH c. 3-OH d. Base - Uracil vs. Thymines e. None of the above.Questions 2-7: Following is a diagram of replication in process.26 24 252327352. W
U. Houston - BIOL - 1361-1362
1.WhichofthefollowingisNOTadifferencebetweenRNAandDNA?ca.Sugarribosevs.deoxyriboseb.2OHc.3OHd.BaseUracilvs.Thyminese.Noneoftheabove.Questions27:Followingisadiagramofreplicationinprocess.2624252327352.Whatisthenameoftheelementlabeled#23?aa.L
U. Houston - BIOL - 1361-1362
Chapter 01 Worksheet 01Formal ChargeIndicate the formal charge of each atom in the molecule (excluding hydrogen).CH3COO-SO 42-CN-HCN H4ClONNH3CNOHPolarity & ShapeIndicate the direction of polarity in each molecule, if it exists, and deter
U. Houston - BIOL - 1361-1362
U. Houston - BIOL - 1361-1362
Chapter 01 Worksheet 02Covalent/IonicFor each compound, state whether its bonding is covalent, ionic, or a mixture of covalent andionic.NaClNH4ClCH2Br 2NaOHLiOC(CH3) 3NaBH3CNElectro-negativityIndicate whether each molecule has a dipole moment,
U. Houston - BIOL - 1361-1362
U. Houston - BIOL - 1361-1362
Chapter 01 Worksheet 03Line-Angle FormulaGive Lewis structures corresponding to the following line-angle structures.OGive the Line-Angle structure for the following Structural and Condensed formulas.CH3CH2CH(OH)(CH2)2CH3CH3CH2CHOCH3CH2NH2Resonance
U. Houston - BIOL - 1361-1362
U. Houston - BIOL - 1361-1362
Chapter 01 Worksheet 04ResonanceDraw all of the resonance contributors, and label the major and minor contributors.OCH 21.O2.H 3CO3.O4.O5.O6.www.zadefaraj.comONH27.CH3H3 CONCH38.HNNH2H3 CNH 29.CH 310 .HOwww.zadefaraj.com
U. Houston - BIOL - 1361-1362
Quiz 04ResonanceDraw all of the resonance contributors, and label the major and minor contributors.Majo rOOHCH2C1.HMajo rHO2.OH 3CMajo rOOO3.4.OOMajorOO5.MajorOOO.ONone, it can't resonate across the C bonded to O6.7.M
U. Houston - BIOL - 1361-1362
secNeoThe first carbon of thecomplex substituent isconnected to three othercarbon atoms.There is one split end onthe second to last carbon.There are two split ends on thesecond to last carbon.C H3EthylIsoThe first carbon of thecomplex substi
U. Houston - BIOL - 1361-1362
Chapter 02 Resonance/Acid Base Rules/HybridizationRules for determining Major and Minor resonance contributors (in order of priority)1. All atoms have an octet.2. Charges: Negative charge on most electronegative. Positive charges on most electroposit
U. Houston - BIOL - 1361-1362
Chapter 02 Worksheet 01Rank the following in order of increasing acidity (1 = lowest, 3 = highest)1.OHOHOH2.H ClNH 3PH 33.HCNH2 OHF4.NH 3CH 4H2 O5.FFHC CH2 CH 2 OHOHC H3 CH 2 CH 2 OHFF6.C H 3CH2 CIC H3 CH 2 CHFOHCH 3 CH 2
U. Houston - BIOL - 1361-1362
Chapter 1 and 2, Worksheet 5Rank the following in order of increasing acidity (1 = lowest, 3 = highest)1.OHOHOH112H2 OHF213NH 3CH 4H2 O25.PH 3HCN4.NH 333.2H Cl2.313FHFC CH2 CH 2 OHC H 3CH2 COHC H3 CH 2 CH 2 OHFF32
U. Houston - BIOL - 1361-1362
Chapter 02 Worksheet 02Give the relationship between the following pairs of structures. The possible relationshipsare: the same compound, constitutional (structural) isomers, cis/trans isomers, or not isomers(different molecular formula)1.CH3CHCH2CH3
U. Houston - BIOL - 1361-1362
U. Houston - BIOL - 1361-1362
Chapter 02 Worksheet 03Provide the IUPAC names for the following compounds.1.2.3.4.5.www.zadefaraj.com6.7.8.9.www.zadefaraj.com10.11.12.13.14.www.zadefaraj.com
U. Houston - BIOL - 1361-1362
U. Houston - BIOL - 1361-1362
Chapter 03 Worksheet 01Draw the Newman projection of the most stable confirmation for the following.about the C2-C3 bond1.2.about the C3-C4 bond3.about the C3-C4 bond4.3-methylpentaneabout the C2-C3 bond5.3,3-dimethylhexaneabout the C3-C4 bon
U. Houston - BIOL - 1361-1362
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Tiffany WitherspoonPSY 265Personal Response on Sexual IdentityPrior to taking this class, I believed that I was liberal and somewhat knowledgeable about humansexuality, having been married and enjoying a healthy sexual life with my husband of thirteen
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Existing WACC = We * Re + Wd*Rd= .70 *16 + .30*8= 11.2 + 2.4 = 13.6%With the issue of new stock the capital structure becomes 80 mil common stock and 20mil debt.WACC = We * Re + Wd*Rd13.6% = .80 *Re + .20*8Re = 14%
Kaplan University - FIN - 480
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The Earth: Its Shifting Plates & the ConsequencesNadia BurrellSC300: Big Ideas in Science: From Methods to MutationThe Earth is a combination of sand, rocks, molten lava; this definition would force one toconclude that our world is a contradiction in
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Lucrarea 1Modelul OSI; Conversii de date1. Modelul de referinta OSIIn anii 80 cand ideea de retea a castigat din ce in ce mai multi adepti, inginerii au inteles ca fara ostandardizare a tehnologiei retelelor dezvoltarea acestui concept este condamnata
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