2020年智慧树知道网课《BasicChemistry基础化学》课后章节测试满分答案

1、第一章测试1【单选题】 （0.5 分 ）Solidshaveashapeandarenotappreciablysharp,convertibleB.indefinite,compressibleC.indefinite,incompressibleD. definite,incompressibleE. definite,compressible2【单选题】 （0.5 分 ）ThesymbolfortheelementpotassiumisA.KB.PtE.3298248【单选题】 （0.5 分 ）TheSIunitformassisA. troyounceB. poundC. kilogr

2、amD.graminkelvins.4 【单选题】 （0.5 分 ） Thetemperatureof25 C°isA.166B.C.103D.E.1385【单选题】 （0.5 分 ）Thedensityofsilveris10.5g/cmcm3.3.Apieceofsilverwithamassof61.3gwouldoccupyavolumeof5.840.0015510.5单选题】 （0.5 分 ）ThecorrectresultofthemolecularmasscalculationforH2SO4is.4 ×15.9994+32.066+2×1.007

3、9A.98.08B.98.84C.98.07498.07998.8387【单选题】 (0.5 分 )Therearesignificantfiguresintheanswertothefollowingcomputation:(29.2-20.0)(1.79 ×105)/1.39A.4B.3单选题】 （0.5 分 ）Ofthefollowing,isthesmallestmass.A.2.5 ×109fgB.2.5 ×1010ngC.2.5 ×10-2mgD.2.5 ×1015pgE.25kg9单选题】 （0.5 分 ）Accuracyrefe

4、rstohowcloseameasurednumberistoinfinityB.howcloseameasurednumberistozerohowcloseameasurednumberistoothermeasurednumbershowcloseameasurednumberistothecalculatedvaluehowcloseameasurednumberistothetruevalue10【单选题】 （0.5 分 ）Inwhichoneofthefollowingnumbersareallofthezerossignificant?A.0.14329B.100.09009C.

5、0.003002D.0.1E.0.05843第二章测试1【单选题】 （0.5 分 ）Acertainmassofcarbonreactswith13.6gofoxygentoformcarbonmonoxide.gramsofoxygenwouldreactwiththatsamemassofcarbontoformcarbondioxide,accordingtoth elawofmultipleproportions?A.13.6B.C.25.627.2D.1366.82【单选题】 （0.5 分 ）Whichstatementbelowcorrectlydescribestherespon

6、sesofalpha,beta,andgammaradiatio ntoanelectricfield?A.Onlyalphaisdeflected,whilebetaandgammashownoresponseB.Alphaandbetaaredeflectedinoppositedirections,whilegammashowsnoresponseC.Bothbetaandgammaaredeflectedinthesamedirection,whilealphashowsnoresponseD.Bothalphaandgammaaredeflectedinthesamedirectio

7、n,whilebetashowsnoresponseBothalphaandbetaaredeflectedinthesamedirection,whilegammashowsnoresponse3【单选题】 （0.5 分 ）andresideintheatomicnucleus.A.noneoftheaboveB.Neutrons,onlyneutronsElectrons,neutronsD.Protons,electronsProtons,neutrons单选题】 （0.5 分 ）Whichoneofthefollowingisnottrueconcerningcathoderays?T

8、heytravelinstraightlinesintheabsenceofelectricormagneticfieldsThecharacteristicsofcathoderaysdependonthematerialfromwhichtheyareemittedTheyaremadeupofelectronsTheyoriginatefromthenegativeelectrodeTheyimpartanegativechargetometalsexposedtothem【单选题】 (0.5 分 )ThechargeonanelectronwasdeterminedintheA.Dal

9、tonatomictheoryB.MillikanoildropexperimentC.Rutherfordgoldfoilexperimentatomictheoryofmattercathoderaytube,byJ.J.Thompson单选题】 （0.5 分 ）IntheRutherfordnuclear-atommodel,A.massisspreadessentiallyuniformlythroughouttheatomB.thelightsubatomicparticles,protonsandneutrons,resideinthenucleusC.theheavysubato

10、micparticles,protonsandneutrons,resideinthenucleus thethreeprincipalsubatomicparticles(protons,neutrons,andelectrons)allhaveessentiallythesamemass thethreeprincipalsubatomicparticles(protons,neutrons,andelectrons)allhaveessentiallythesamemassand massisspreadessentiallyuniformlythroughouttheatom7【单选题

11、】 （0.5 分 ）AllatomsofagivenelementhavethesameA.densityB.numberofneutronsC.numberofprotonsnumberofelectronsandneutronsmass8【单选题】 （0.5 分 ）Anatomofthemostcommonisotopeofgold, utrons,andelectrons.197 Au,hasprotons,ne118,79,39B.79,118,118D.197,79,118E.79,118,79单选题】 （0.5 分 ）Whichcombinationofprotons,neutro

12、ns,andelectronsiscorrectfortheisotopecopper-63,?34p+,34n ° ,29eB.29p+,29n ° ,63e-C.34p+,29n ° ,34e-D.29p+,34n ° ,29e-E.63p+,29n ° ,63e-10单选题】 （0.5 分 ）IsotopesareatomsthathavethesamenumberofbutdifferingnumberofA. electrons,protonsB.neutrons,protonsC.protons,neutronsneutrons,e

13、lectronsprotons,electrons第三章测试1【单选题】 （0.5 分 ）iscreditedwithdevelopingtheconceptofatomicnumbers.DmitriMendeleevLotharMeyerMichaelFaradayHenryMoseleyErnestRutherford单选题】 （0.5 分 ）ElementsinthemodernversionoftheperiodictablearearrangedinorderofincreasingA.averageatomicmassnumberofisotopesatomicmassatomi

14、cnumberoxidationnumber单选题】 （0.5 分 ）Thefirstionizationenergiesoftheelementsasyougofromlefttorightacrossaperiodoftheperiodictable,andasyougofromthebottomtothetopofagroupinthetable.increase,increaseB.decrease,increasedecrease,decreaseincrease,decreaseE.arecompletelyunpredictable【单选题】 (0.5 分 )Ingeneral,

15、asyougoacrossaperiodintheperiodictablefromlefttoright:(1)theatomicradius_;(2)theelectronaffinitybecomesnegative;and(3)thefirstionizatione nergy.increases,increasingly,increasesB. increases,increasingly,decreasesC. decreases,decreasingly,increasesD. decreases,increasingly,increasesE.decreases,increas

16、ingly,decreases【单选题】 (0.5 分 )Whichofthefollowingtraitscharacterizesthealkalimetals?A.formationofdianionsB.thesmallestatomicradiusinaperiodC.thelowestfirstionizationenergiesinaperiodD.existenceasdiatomicmoleculesveryhighmeltingpoint单选题】 （0.5 分 ）Oxidesoftheactivemetalscombinewithwatertoformmetalhydrid

17、esoxygengasC.hydrogengaswaterandasaltmetalhydroxides7【单选题】 (0.5 分 )Analkalineearthmetalformsacompoundwithoxygenwiththeformula.(ThesymbolMrepresentsanyoneofthealkalineearthmetals.)A.M2O2B.M2OMOD.MO2MO38【单选题】 （0.5 分 ）Whichnon-metalexistsasadiatomicsolid?phosphorusantimonybromineboroniodine9【单选题】 (0.5

18、分 )26Theonlynoblegasthatdoesnothavethens2 np 6valenceelectronconfigurationisA.neonB.kryptonC.Allnoblegaseshavethens 2np 6 valenceelectronconfigurationheliumradon10单选题】 （0.5 分 ）WhatistheoxidationnumberofchromiuminCr(NH3)4Cl2Cl?0-2E.-33第四章测试1【单选题】 （0.5 分 ）unpairedelectronsintheLewissymbolforaphTherear

19、epairedandosphorusatom.A.2,4B.0,3C.2,3D.04,24,32单选题】 （0.5 分 ）ThereareunpairedelectronsintheLewissymbolforanoxygenatom.A.4C.123【单选题】 (0.5 分 )3-)isTheelectronconfigurationofthephosphideion(PA.Ne3s 23p6B.Ne3p 2C.Ne3s 23p3D.Ne3s 23p1E.Ne3s 2单选题】 （0.5 分 ）Elementsfromoppositesidesoftheperiodictabletendtof

20、ormcovalentcompoundsB.ioniccompoundsC.covalentcompoundsthataregaseousatroomtemperatureD.homonucleardiatomiccompoundsE.compoundsthataregaseousatroomtemperature单选题】 （0.5 分 ）DetermininglatticeenergyfromBorn-HabercycledatarequirestheuseofAvogadro'snumberCoulomb'slawPeriodiclawtheoctetruleHess

21、9;slaw#单选题】 （0.5 分 ）Howmanyhydrogenatomsmustbondtosilicontogiveitanoctetofvalenceelectrons?4单选题】 （0.5 分 ）Inthemoleculebelow,whichatomhasthelargestpartialnegativechargeIClE.Br8【单选题】 (0.5 分 )Electronegativityfromlefttorightwithinaperiodandfromtoptobottomwithinagroup.A.increases,staysthesameB.increases

22、,decreasesC.staysthesame,increasesD.increases,increasesE.decreases,increases单选题】 （0.5 分 ）TheLewisstructureofAsH3showsnonbondingelectronpair(s)onAs.Thiscannotbedeterminedfromthedatagiven.3D.E.10【单选题】 （0.5 分 ）TheformalchargeoncarboninthemoleculebelowisA.2B.3-1第五章测试1 【单选题】 （0.5 分 ） ThecorrectnameforK 2

23、SisA. dipotassiumsulfateB. potassiumsulfateC. potassiumdisulfideD. potassiumbisulfideE. potassiumsulfide2【单选题】 （0.5 分 ）2SO3isThecorrectnameforHA.sulfurhydroxidehydrosulfuricacidhydrosulficacidsulfuricacidsulfurousacid【单选题】 (0.5 分 )ThecorrectnameofthecompoundNa3NisA. sodiumtrinitrideB. sodiumnitrideC

24、.trisodiumnitridesodiumazidesodium(IX)nitride单选题】 （0.5 分 ）TheionsCa 2+ andPO 43- formasaltwiththeformulaCa(PO 4)2B.Ca 3(PO 4)2C.CaPO 4D.Ca 2PO4E.Ca 2(PO 4)35【单选题】 （0.5 分 ）ElementMreactswithfluorinetoformanioniccompoundwiththeformulaMF3.TheM-ionhas1 8electrons.ElementMis.A.ArB.CaC.PD.ScE.Cr6【单选题】 （0.

25、5 分 ）TheconjugatebaseofHSO 4-isA.HSO4+H2SO 4H3SO 4D.OH-E.SO42-7Ci°nwhichH +is0.00250 M?【单选题】 (0.5 分 )WhatisthepHofanaqueoussolutionat25.0A.3.4B.2.6C.-3.4D.2.25E.-2.6CwithpH°=4.282?单选题】 （0.5 分 ）Whatistheconcentration(inM)ofhydroniumionsinasolutionat25.0A.1.92 ×10-105.22 ×10-5C.1.6

26、6 ×104D.4.28E.9.719【单选题】 （0.5 分 ）WhatisthepHofa0.0150 M aqueoussolutionofbariumhydroxide?A.21E.12.5第六章测试单选题】 （0.5 分 ）.NH3(g)+O2(g)Whenthefollowingequationisbalanced,thecoefficientsareNO2(g)+H2O(g)42,3,2,3B.1,3,1,2C.4,3,4,31,1,1,14,7,4,62A【单选题】 （0.5 分 ）Whenthefollowingequationisbalanc

27、ed,thecoefficientofAlis.Al(s)+H2O(l)l(OH)3(s)+H2(g)521E.3【单选题】 (0.5 分 )2is.C2H4O(g)+O2Whenthefollowingequationisbalanced,thecoefficientofO(g) CO2(g)+H2O(g)A.2421单选题】 （0.5 分 ）3CH(l)isburnedinWritethebalancedequationforthereactionthatoccurswhenmethanol,CH air.Whatisthecoefficientofmethanolinthebalance

28、dequation?A.B.C.D.1.5E.35【单选题】 (0.5 分 )ThebalancedequationforthedecompositionofsodiumazideisA.2NaN 3(s) 2Na(s)+3N2(g)B.NaN 3(s) Na(s)+N2 (g)+N(g)C.NaN 3(s) Na(s)+N2(g)D.2NaN 3(s) 2Na(s)+2N2(g)E.2NaN 3(s) Na2(s)+3N2(g)6【单选题】 (0.5 分 )Thesolubilityofmanganese(II)hydroxide(Mn(OH)2)is2.2 1×0 -5 M.Wh

29、atistheK sp ofMn(OH) 2?A.4.3 ×10-14B.4.8 ×10-10C.1.1 ×10-14D.2.1 ×10-14E.2.2 ×10-5【单选题】 （0.5 分 ）Whatistheempiricalformulaofacompoundthatcontains49.4%K,20.3%S,and30.3%Obym ass?A.KSO2B.K2SO4C.K2SO3D.KSO4E.KSO3单选题】 （0.5 分 ）8Acompoundcontains40.0%C,6.71%H,and53.29%Obymass.Themol

30、ecularweightofthecompoundis60.05amu.Themolecularformulaofthiscompoundis.C2H3O4B.C2H4O2C.C2H2O4D.CHO2CH2O单选题】 （0.5 分 ）Magnesiumandnitrogenreactinacombinationreactiontoproducemagnesiumnitride:3Mg+N2 Mg3N2Inaparticularexperiment,a9.27gsampleofN2reactscompletely.ThemassofM gconsumedisg.16.1B.0.92C.13.9D

31、.8.04E.10 BaCrO4+2KCl(b)P单选题】 （0.5 分 ）Whichofthefollowingreactionsisaredoxreaction?(a)K2CrO4+BaCl2b22+2Br- PbBr(c)Cu+S CuSA.20.55(c)only(a)onlyC.(b)only(a)and(c)(b)and(c)第七章测试1 【单选题】 (0.5 分 )Agasatapressureof10.0PaexertsaforceofNonanareaof5.5mA.55B.1.8D.5.5E.18单选题】 （0.5 分 ）Agasvesselisattachedtoanop

32、en-endmanometercontaininganon-volatileliquidofdensity0.791g/mLasshownbelow.Thedifferenceinheightsoftheis755mmHg.Giventhatthedensityof mercuryis13.6g/mL,thepressureoftheenclosedgasisatm.liquidinthetwosidesofthemanometeris43.4cmwhentheatmosphericpressure0.960.9930.9871.030.99单选题】 （0.5 分 ）Asampleofagas

33、(5.0mol)at1.0atmisexpandedatconstanttemperaturefrom10Lto15L.Thefinalpressureisatm.77.3A.7.5B.3.3C.1.5D.0.67E.15单选题】 （0.5 分 ）AsampleofH 2gas(12.28g)occupies100.0Lat400.0Kand2.00atm.Asampleweighing9.49goccupiesLat353Kand2.00atm.A.147B.68.2C.54.7D.1095Ccon°tainsmolofgas.【单选题】 （0.5 分 ）A0.325Lflaskf

34、illedwithgasat0.914atmand19A.1.24 ×10-212.4C.1.48 ×10-2D.80.79.426【单选题】 （0.5 分 ）Asampleofgas（1.3mol）occupiesLat22C°and2.5atm.A.0.9431D.3.2×#-20.079E.137【单选题】 （0.5 分 ）AflaskcontainsamixtureofHeandNeatatotalpressureof2.6atm.Thereare2.0molofHeand5. 0molofNeintheflask.Thepartialpress

35、ureofHeisatm.A.9.1B.1.04C.0.74D.6.5E.1.868°Cism/s.【单选题】 （0.5 分 ）Theroot-mean-squarespeedofCOat113A.B.317586C.99331.59【单选题】 (0.5 分 )AsampleofN 2gas(2.0mmol)effusedthroughapinholein5.5s.Itwilltake ameamountofCH 4toeffuseunderthesameconditions.A.7.3B.9.6C.4.2D.sforthes5.53.110【单选题】 （0.5 分 ）Usingth

36、evanderWaalsequation,thepressureina22.4Lvesselcontaining1.00molofneongasat100 °Cisatm.( a =0.211L 2atm/mol 2,b=0.0171L/mol)A.1.37B.0.3670.73D.1.21E.1第八章测试1【单选题】 （0.5 分 ）Asolutionispreparedbydissolving15.0gofNHutionis0.974g/mL.ThemolefractionofNHA.3in250gofwater.Thedensityoftheresultingsol3inthe

37、solutionis.0.9220.940.0597D.16.8E.0.0642【单选题】 (0.5 分 )Thevaporpressureofpurewaterat25C°is23.8torr.Determinethevaporpressure(torr)ofwaterat25 °Caboveasolutionpreparedbydissolving35gofurea(anon-volatile,non-electrolyte, MW=60.0g/mol)in75gofwater.A.0.882.93.327E.3【单选题】 (0.5 分 )Thefreezingpoin

38、tofethanol(C2H5OH)is-114.6 °C.Themolalfreezingpointdepressionconstantforethanolis2.00C/m°.Whatisthefreezingpoint(C)o°fasolutionpreparedbydissolving50.0gofglycerine(C 3H8O3anonelectrolyte)in200gofethanol?-5.42B.-132.3C.-115-114.64【单选题】 (0.5 分 )Asolutionispreparedbydissolving6.00gofanunknownnonelec