BasicChemistry基礎化學-知到答案、智慧樹答案

BasicChemistry基礎化學-知到答案、智慧樹答案第一章單元測試1、問題：Solidshavea__________shapeandarenotappreciably__________.選項：A:sharp,convertibleB:indefinite,compressibleC:indefinite,incompressibleD:definite,incompressibleE:definite,compressible答案:【definite,compressible】2、問題：Thesymbolfortheelementpotassiumis__________.選項：A:SB:CaC:PD:PtE:K答案:【K】3、問題：TheSIunitformassis__________.選項：A:poundB:kilogramC:gramD:troyounce答案:【kilogram】4、問題：Thetemperatureof25°Cis__________inkelvins.選項：A:166B:248C:298D:103E:138答案:【298】5、問題：Thedensityofsilveris10.5g/cm3.Apieceofsilverwithamassof61.3gwouldoccupyavolumeof__________cm3.選項：A:644B:5.84C:10.5D:0.171E:0.00155答案:【5.84】6、問題：ThecorrectresultofthemolecularmasscalculationforH2SO4is________.4×15.9994+32.066+2×1.0079選項：A:98.079B:98.84C:98.838D:98.08E:98.074答案:【98.079】7、問題：Thereare__________significantfiguresintheanswertothefollowingcomputation:(29.2-20.0)(1.79×105)/1.39選項：A:3B:1C:4D:5E:2答案:【2】8、問題：Ofthefollowing,__________isthesmallestmass.選項：A:25kgB:2.5×1010ngC:2.5×109fgD:2.5×10-2mgE:2.5×1015pg答案:【2.5×109fg】9、問題：Accuracyrefersto__________.選項：A:howcloseameasurednumberistoinfinityB:howcloseameasurednumberistoothermeasurednumbersC:howcloseameasurednumberistothecalculatedvalueD:howcloseameasurednumberistothetruevalueE:howcloseameasurednumberistozero答案:【howcloseameasurednumberistothetruevalue】10、問題：Inwhichoneofthefollowingnumbersareallofthezerossignificant?選項：A:100.09009B:0.003002C:0.14329D:0.1E:0.05843答案:【100.09009】第二章單元測試1、問題：Acertainmassofcarbonreactswith13.6gofoxygentoformcarbonmonoxide.__________gramsofoxygenwouldreactwiththatsamemassofcarbontoformcarbondioxide,accordingtothelawofmult選項：A:136B:25.6C:27.2D:6.8E:13.6答案:【27.2】2、問題：Whichstatementbelowcorrectlydescribestheresponsesofalpha,beta,andgammaradiationtoanelectricfield?選項：A:Bothalphaandgammaaredeflectedinthesamedirection,whilebetashowsnoresponseB:Bothalphaandbetaaredeflectedinthesamedirection,whilegammashowsnoresponseC:Alphaandbetaaredeflectedinoppositedirections,whilegammashowsnoresponseD:Bothbetaandgammaaredeflectedinthesamedirection,whilealphashowsnoresponseE:Onlyalphaisdeflected,whilebetaandgammashownoresponse答案:【Alphaandbetaaredeflectedinoppositedirections,whilegammashowsnoresponse】3、問題：__________and__________resideintheatomicnucleus.選項：A:Protons,neutronsB:noneoftheaboveC:Neutrons,onlyneutronsD:Protons,electronsE:Electrons,neutrons答案:【Protons,neutrons】4、問題：Whichoneofthefollowingisnottrueconcerningcathoderays?選項：A:TheyimpartanegativechargetometalsexposedtothemB:TheyoriginatefromthenegativeelectrodeC:ThecharacteristicsofcathoderaysdependonthematerialfromwhichtheyareemittedD:TheyaremadeupofelectronsE:Theytravelinstraightlinesintheabsenceofelectricormagneticfields答案:【Thecharacteristicsofcathoderaysdependonthematerialfromwhichtheyareemitted】5、問題：Thechargeonanelectronwasdeterminedinthe__________.選項：A:MillikanoildropexperimentB:cathoderaytube,byJ.J.ThompsonC:atomictheoryofmatterD:RutherfordgoldfoilexperimentE:Daltonatomictheory答案:【Millikanoildropexperiment】6、問題：IntheRutherfordnuclear-atommodel,__________.選項：A:theheavysubatomicparticles,protonsandneutrons,resideinthenucleusB:thethreeprincipalsubatomicparticles(protons,neutrons,andelectrons)allhaveessentiallythesamemassandmassisspreadessentiallyuniformlythroughouttheatomC:massisspreadessentiallyuniformlythroughouttheatomD:thethreeprincipalsubatomicparticles(protons,neutrons,andelectrons)allhaveessentiallythesamemassE:thelightsubatomicparticles,protonsandneutrons,resideinthenucleus答案:【theheavysubatomicparticles,protonsandneutrons,resideinthenucleus】7、問題：Allatomsofagivenelementhavethesame__________.選項：A:numberofneutronsB:numberofelectronsandneutronsC:massD:numberofprotonsE:density答案:【numberofprotons】8、問題：Anatomofthemostcommonisotopeofgold,197Au,has__________protons,__________neutrons,and__________electrons.選項：C:79,197,197答案:【】9、問題：Whichcombinationofprotons,neutrons,andelectronsiscorrectfortheisotopecopper-63,?選項：A:63p+,29n°,63e?B:34p+,29n°,34e?C:34p+,34n°,29e?D:29p+,34n°,29e?E:29p+,29n°,63e?答案:【29p+,34n°,29e?】10、問題：Isotopesareatomsthathavethesamenumberof__________butdifferingnumberof__________.選項：A:protons,neutronsB:neutrons,electronsC:electrons,protonsD:protons,electronsE:neutrons,protons答案:【protons,neutrons】第三章單元測試1、問題：__________iscreditedwithdevelopingtheconceptofatomicnumbers.選項：A:ErnestRutherfordB:DmitriMendeleevC:HenryMoseleyD:MichaelFaradayE:LotharMeyer答案:【HenryMoseley】2、問題：Elementsinthemodernversionoftheperiodictablearearrangedinorderofincreasing__________.選項：A:numberofisotopesB:averageatomicmassC:atomicmassD:oxidationnumberE:atomicnumber答案:【atomicnumber】3、問題：Thefirstionizationenergiesoftheelements__________asyougofromlefttorightacrossaperiodoftheperiodictable,and__________asyougofromthebottomtothetopofagroupinthetable.選項：A:decrease,decreaseB:increase,increaseC:arecompletelyunpredictableD:decrease,increaseE:increase,decrease答案:【increase,increase】4、問題：Ingeneral,asyougoacrossaperiodintheperiodictablefromlefttoright:(1)theatomicradius__________;(2)theelectronaffinitybecomes__________negative;and(3)thefirstionizationenergy__________.選項：A:increases,increasingly,decreasesB:decreases,increasingly,decreasesC:increases,increasingly,increasesD:decreases,decreasingly,increasesE:decreases,increasingly,increases答案:【decreases,increasingly,increases】5、問題：Whichofthefollowingtraitscharacterizesthealkalimetals?選項：A:existenceasdiatomicmoleculesB:veryhighmeltingpointC:thelowestfirstionizationenergiesinaperiodD:thesmallestatomicradiusinaperiodE:formationofdianions答案:【thelowestfirstionizationenergiesinaperiod】6、問題：Oxidesoftheactivemetalscombinewithwatertoform__________.選項：A:metalhydridesB:metalhydroxidesC:oxygengasD:waterandasaltE:hydrogengas答案:【metalhydroxides】7、問題：Analkalineearthmetalformsacompoundwithoxygenwiththeformula__________.(ThesymbolMrepresentsanyoneofthealkalineearthmetals.)選項：A:M2O2B:MO2C:M2OD:MOE:MO3答案:【MO】8、問題：Whichnon-metalexistsasadiatomicsolid?選項：A:phosphorusB:boronC:antimonyD:bromineE:iodine答案:【iodine】9、問題：Theonlynoblegasthatdoesnothavethens2np6valenceelectronconfigurationis__________.選項：A:Allnoblegaseshavethens2np6valenceelectronconfigurationB:heliumC:kryptonD:neonE:radon答案:【helium】10、問題：Whatistheoxidationnumberofchromiumin[Cr(NH3)4Cl2]Cl__________?選項：A:-2B:2C:3D:0E:-3答案:【3】第四章單元測試1、問題：Thereare__________pairedand__________unpairedelectronsintheLewissymbolforaphosphorusatom.選項：A:0,3B:2,4C:4,3D:2,3E:4,2答案:【2,3】2、問題：Thereare__________unpairedelectronsintheLewissymbolforanoxygenatom.選項：A:3B:0C:2D:4E:1答案:【2】3、問題：Theelectronconfigurationofthephosphideion(P3-)is__________.選項：A:[Ne]3s23p6B:[Ne]3s2C:[Ne]3s23p1D:[Ne]3s23p3E:[Ne]3p2答案:【[Ne]3s23p6】4、問題：Elementsfromoppositesidesoftheperiodictabletendtoform__________.選項：A:homonucleardiatomiccompoundsB:covalentcompoundsthataregaseousatroomtemperatureC:ioniccompoundsD:compoundsthataregaseousatroomtemperatureE:covalentcompounds答案:【ioniccompounds】5、問題：DetermininglatticeenergyfromBorn-Habercycledatarequirestheuseof__________.選項：A:theoctetruleB:Hess'slawC:PeriodiclawD:Coulomb'slaw答案:【Hess'slaw】6、問題：Howmanyhydrogenatomsmustbondtosilicontogiveitanoctetofvalenceelectrons?選項：A:4B:5C:3D:1E:2答案:【4】7、問題：Inthemoleculebelow,whichatomhasthelargestpartialnegativecharge__________?選項：A:CB:BrC:ID:FE:Cl答案:【F】8、問題：Electronegativity__________fromlefttorightwithinaperiodand__________fromtoptobottomwithinagroup.選項：A:increases,staysthesameB:increases,increasesC:staysthesame,increasesD:increases,decreasesE:decreases,increases答案:【increases,decreases】9、問題：TheLewisstructureofAsH3shows__________nonbondingelectronpair(s)onAs.選項：A:1B:Thiscannotbedeterminedfromthedatagiven.C:3D:0E:2答案:【1】10、問題：Theformalchargeoncarboninthemoleculebelowis__________.選項：A:1B:3C:2D:0E:-1答案:【0】第五章單元測試1、問題：ThecorrectnameforK2Sis__________.選項：A:potassiumbisulfideB:dipotassiumsulfateC:potassiumsulfideD:potassiumdisulfideE:potassiumsulfate答案:【potassiumsulfide】2、問題：ThecorrectnameforH2SO3is__________.選項：A:sulfurousacidB:sulfurhydroxideC:hydrosulfuricacidD:sulfuricacidE:hydrosulficacid答案:【sulfurousacid】3、問題：ThecorrectnameofthecompoundNa3Nis__________.選項：A:sodiumnitrideB:trisodiumnitrideC:sodiumtrinitrideD:sodium(IX)nitrideE:sodiumazide答案:【sodiumnitride】4、問題：TheionsCa2+andPO43-formasaltwiththeformula__________.選項：A:CaPO4B:Ca2PO4C:Ca3(PO4)2D:Ca2(PO4)3E:Ca(PO4)2答案:【Ca3(PO4)2】5、問題：ElementMreactswithfluorinetoformanioniccompoundwiththeformulaMF3.TheM-ionhas18electrons.ElementMis__________.選項：A:ArB:CaC:PD:CrE:Sc答案:【Sc】6、問題：TheconjugatebaseofHSO4-is選項：A:HSO4+B:H2SO4C:OH-D:SO42-E:H3SO4+答案:【SO42-】7、問題：WhatisthepHofanaqueoussolutionat25.0°Cinwhich[H+]is0.00250M?選項：A:-2.6B:2.6C:2.25D:-3.4E:3.4答案:【2.6】8、問題：Whatistheconcentration(inM)ofhydroniumionsinasolutionat25.0°CwithpH=4.282?選項：A:4.28B:9.71C:1.66×104D:5.22×10-5E:1.92×10-10答案:【5.22×10-5】9、問題：WhatisthepHofa0.0150Maqueoussolutionofbariumhydroxide?選項：A:1.82B:12.2C:1.52D:10.4E:12.5答案:【12.5】第六章單元測試1、問題：Whenthefollowingequationisbalanced,thecoefficientsare__________.NH3(g)+O2(g)→NO2(g)+H2O(g)選項：A:4,7,4,6B:2,3,2,3C:4,3,4,3D:1,1,1,1E:1,3,1,2答案:【4,7,4,6】2、問題：Whenthefollowingequationisbalanced,thecoefficientofAlis__________.Al(s)+H2O(l)→Al(OH)3(s)+H2(g)選項：A:3B:4C:5D:2E:1答案:【2】3、問題：Whenthefollowingequationisbalanced,thecoefficientofO2is__________.C2H4O(g)+O2(g)→CO2(g)+H2O(g)選項：A:2B:1C:3D:5E:4答案:【5】4、問題：Writethebalancedequationforthereactionthatoccurswhenmethanol,CH3CH(l)isburnedinair.Whatisthecoefficientofmethanolinthebalancedequation?選項：A:3B:2C:1D:4E:1.5答案:【2】5、問題：Thebalancedequationforthedecompositionofsodiumazideis__________.選項：A:2NaN3(s)→2Na(s)+2N2(g)B:2NaN3(s)→2Na(s)+3N2(g)C:NaN3(s)→Na(s)+N2(g)+N(g)D:2NaN3(s)→Na2(s)+3N2(g)E:NaN3(s)→Na(s)+N2(g)答案:【2NaN3(s)→2Na(s)+3N2(g)】6、問題：Thesolubilityofmanganese(II)hydroxide(Mn(OH)2)is2.2×10-5M.WhatistheKspofMn(OH)2?選項：A:4.8×10-10B:2.2×10-5C:4.3×10-14D:2.1×10-14E:1.1×10-14答案:【4.3×10-14】7、問題：Whatistheempiricalformulaofacompoundthatcontains49.4%K,20.3%S,and30.3%Obymass?選項：A:KSO3B:K2SO3C:KSO4D:KSO2E:K2SO4答案:【K2SO3】8、問題：Acompoundcontains40.0%C,6.71%H,and53.29%Obymass.Themolecularweightofthecompoundis60.05amu.Themolecularformulaofthiscompoundis__________.選項：A:C2H2O4B:CHO2C:C2H4O2D:CH2OE:C2H3O4答案:【C2H4O2】9、問題：Magnesiumandnitrogenreactinacombinationreactiontoproducemagnesiumnitride:3Mg+N2→Mg3N2Inaparticularexperiment,a9.27gsampleofN2reactscompletely.ThemassofMgconsume選項：A:16.1B:0.92C:24.1D:13.9E:8.04答案:【24.1】10、問題：Whichofthefollowingreactionsisaredoxreaction?(a)K2CrO4+BaCl2→BaCrO4+2KCl(b)Pb22++2Br-→PbBr(c)Cu+S→CuS選項：A:(b)and(c)B:(a)and(c)C:(a)onlyD:(b)onlyE:(c)only答案:【(c)only】第七章單元測試1、問題：Agasatapressureof10.0Paexertsaforceof__________Nonanareaof5.5m2.選項：A:55B:18C:0.55D:1.8E:5.5答案:【55】2、問題：Agasvesselisattachedtoanopen-endmanometercontaininganon-volatileliquidofdensity0.791g/mLasshownbelow.Thedifferenceinheightsoftheis755mmHg.Giventhatthedensityofmercuryis13.6g/mL,thepressureoftheenclosedgasis__________atm.liquid選項：A:0.99B:0.987C:0.993D:1.03E:0.96答案:【0.96】3、問題：Asampleofagas(5.0mol)at1.0atmisexpandedatconstanttemperaturefrom10Lto15L.Thefinalpressureis__________atm.選項：A:3.3B:0.67C:1.5D:7.5E:15答案:【0.67】4、問題：AsampleofH2gas(12.28g)occupies100.0Lat400.0Kand2.00atm.Asampleweighing9.49goccupies__________Lat353Kand2.00atm.選項：A:147B:68.2C:109D:54.7E:77.3答案:【68.2】5、問題：A0.325Lflaskfilledwithgasat0.914atmand19°Ccontains__________molofgas.選項：A:1.48×10-2B:1.24×10-2C:80.7D:9.42E:12.4答案:【1.24×10-2】6、問題：Asampleofgas(1.3mol)occupies__________Lat22°Cand2.5atm.選項：A:13B:0.079C:31D:3.2×10-2E:0.94答案:【13】7、問題：AflaskcontainsamixtureofHeandNeatatotalpressureof2.6atm.Thereare2.0molofHeand5.0molofNeintheflask.ThepartialpressureofHeis__________atm.選項：A:0.74B:1.86C:6.5D:1.04E:9.1答案:【0.74】8、問題：Theroot-mean-squarespeedofCOat113°Cis__________m/s.選項：A:993B:58.3C:31.5D:586E:317答案:【586】9、問題：AsampleofN2gas(2.0mmol)effusedthroughapinholein5.5s.Itwilltake__________sforthesameamountofCH4toeffuseunderthesameconditions.選項：A:9.6B:5.5C:7.3D:3.1E:4.2答案:【4.2】10、問題：UsingthevanderWaalsequation,thepressureina22.4Lvesselcontaining1.00molofneongasat100°Cis__________atm.(a=0.211L2atm/mol2,b=0.0171L/mol)選項：A:1B:0.73C:1.21D:0.367E:1.37答案:【1.37】第八章單元測試1、問題：Asolutionispreparedbydissolving15.0gofNH3in250gofwater.Thedensityoftheresultingsolutionis0.974g/mL.ThemolefractionofNH3inthesolutionis__________.選項：A:0.922B:16.8C:0.0597D:0.94E:0.064答案:【0.0597】2、問題：Thevaporpressureofpurewaterat25°Cis23.8torr.Determinethevaporpressure(torr)ofwaterat25°Caboveasolutionpreparedbydissolving35gofurea(anon-volatile,non-electrolyte,MW=60.0g/mol)in75gofwater.選項：A:3.3B:27C:0.88D:21E:2.9答案:【21】31、問題：Thefreezingpointofethanol(C2H5OH)is-14.6°C.Themolalfreezingpointdepressionconstantforethanolis2.00°C/m.Whatisthefreezingpoint(°C)ofasolutionpreparedbydissolving50.0gofglycerine(C3H8O3anonelectrolyte)in200go選項：A:-5.42C:-120E:-132.3答案: