- 问题详情:羰基硫(COS)是全球硫循环的重要中间体,也是有机合成中的重要原料,是化学工作者重要的研究对象。已知:Ⅰ.COS(g)+H2(g)H2S(g)+CO(g) △Hl=-17kJ/mol;Ⅱ.COS(g)+H2O(g)H2S(g)+CO2(g) △H2=-35kJ/mol。回答下列问题:(1)反应CO(g)+H2O(g)H2(g)+CO2(g)的△H=________。(2)在充有催化剂的恒压密闭容器中进行...
- 20756
- 问题详情:.Ⅰ.CO和H2的混合气体俗称合成气,是一种重要的工业原料气,工业上利用天然气(主要成分为CH4)与水进行高温重整制备合成气。(1)用**与水蒸气制备合成气,每生成1mol合成气,需要供给51.5kJ热量。该反应的热化学方程式为_____________________________________________________...
- 27481
- TheyslippedtheundercovercopaMickeyFinn.Today,Iwasboredanddecideditwouldbefuntopretendtobeanundercovercopandpulloverothercars.ThefirstcarIpulledoverwasarealundercovercop.Butheshothimselfinthefoot;oneofthetwowasanundercovercopwhosenthimtojail.Youhavepl...
- 30099
- 问题详情:Aboyandagirlwereplayingtogether.Theboyhada 41 (collect)ofmarbles.Thegirlhadsomesweetswith 42 .Theboytoldthegirlthathe 43 (give)herallhismarblesinexchange 44 hersweets.Thegirlagreed.Thebo...
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- 问题详情:.已知:①CO(g)+H2O(g)═CO2(g)+H2(g) ∆H1;②CH4(g)+H2O(g)═CO(g)+3H2(g) ∆H2。下列推断正确的是 ( )A.若CO的燃烧热为∆H3,则H2的燃烧热...
- 24465
- 问题详情:Haveyoueverbeeninaconflict(冲突)?Doyouknowhowtosolveit?Conflictresolutionisapeacefulwayoftryingtosolveaconflict.Bothsidesintheconflictexplainwhattheythinkhappenedtocauseit.Thepersonwholistenstobothsidesiscalledthemediator(调解人).Afterbothsid...
- 31482
- Implementingsimpleco-occurrenceconstraintvalidation.Rulesliketheseareoftencalledco-occurrenceconstraintsorsimplyco-constraints.Theconceptsarepresentedtotheuserinatabularformatandrankedbasedontheco-occurrencestatistics.Asyouseelater,thetitleandgenderd...
- 17095
- 问题详情:ColorsoftenappearinAmerican'severydaytalk.Redisa 21 coloranditisoftenusedtoexpressheatandstrong 22 likeanger.Americansmaysaytheyareredhotaboutsomething 23 .However,peoplewillalsouseitinother 24 .Forexample,fastloudmusicispo...
- 12622
- 问题详情:已知:C(s)+O2(g)===CO(g) ΔH=-110.5kJ·mol-1①C(s)+O2(g)===CO2(g)ΔH=-393.51kJ·mol-1②计算反应C(s)+CO2(g)===2CO(g)的反应热ΔH的值为 A.-283.01kJ·mol-1 B.+172.51kJ·mol-1 C.+283.1kJ·mol-1D.+504.00kJ·mol-1【回答】B知识点:化学反应中的能量变化题型:选择...
- 11458
- 问题详情:等于 ( )A.sin2-cos2 B.cos2-sin2 C.±(sin2-cos2)D.sin2+cos2【回答】A 知识点:三角函数题型:选择题...
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- 问题详情:具有广泛用途的Co放*源首次实现了国内批量生产。另外,钴还有多种原子Co、Co、Co和Co。以下关于钴原子的说法正确的是()、Co、Co、Co和Co是摩尔质量不同的五种同素异形体放*源可以用来治疗癌症,其原子中中子数与电子数之差等于6、Co、Co、Co和Co互为同位素,物理*质几...
- 15735
- Itmaybeathoughtofaclosefriendorfamilymemberconstantlycrtitisizingyouoracoworkeroryourbossgivingyouanidentitythatisn'treallyallignedwithwhoyoutrulyare.Butinthiscase,itappearedtocomefromafriendorcoworker,andmorethan10millionlovelornorcuriouspeoplejust...
- 31020
- Butthatdoesnotmeantransatlanticco-operationisasham.Whileappealingforco-operation,thepresidentlaidbaretheideologicaldividewiththeRepublicans.Thismeetingalsodecidedthattransportationiscontentthatisfocaltosecondaryregionco-operation.Weinitiatedaninterag...
- 32331
- 问题详情:0.1mol·L-1的K2CO3溶液中,由于CO的水解,使得c(CO)<0.1mol·L-1。如果要使c(CO)更接近于0.1mol·L-1,可以采取的措施是()A.加入少量盐* B.加入适量的水C.加入适量的KOH D.加热【回答】*C解析A项发生反应:2H...
- 19448
- line-tunableCOlaserCOlaserinthelaserfamily...
- 17826
- 问题详情: —Where thewolfcomefrom?—It fromEurope.A.do;comes B.is;is C.does;comes D.does;come【回答】C知识点:动词时态题型:选择题...
- 17669
- Carbonmonoxide(CO)isacolorless,odorlessgasproducedbyincompletecombustionoffuelsorothermaterialcontainingcarbon.ThoonhasbeenPresidentandCo-COOofGoldmanSachsforyearsbeforehejoinedTsinghuain2003,offeringEMBAstudentstheGlobalLeadershipcoursewithasymbolic...
- 14537
- Inmostcountries,stimuluspackageswerelate,badlyco-ordinatedandtoostructural.Iranarrestedtheembassyworkersinaco-ordinatedoperationlastweekend.Then,co-ordinatedgovernmentactiononagrandscalestoppedtheglobalfinancialcrisisfromturningintoadepression.Butthe...
- 24534
- 问题详情:造成*雨的主要物质是 A、CH4和CO B、SO2和CO C、CO和CO2 D、SO2和NO2【回答】D知识点:燃料的合理利用与开发题型:选择题...
- 22812
- 问题详情:下列各项中正确表示肽键的是()A.─CO─NH2─B.─CO─N2H2─C.─NH2─CO─D.─CO─NH─【回答】解:肽键是由一个氨基*的氨基-NH2和另一个氨基*的羧基-COOH脱去1分子水形成的,因此肽键的结构为-NH-CO-.故选:D.知识点:细胞的分子组成题型:选择题...
- 31000
- Onekeyquestionnowistodevelopsomecongruenceonthepurposeandmanagementofsuchareserve-andonhowtoco-ordinateduringamajordisruption.Theycanco-ordinatefares,salesforces,flightschedulesandfrequent-flyerprogrammes—efficienciesthatare,theyclaim,intheinterests...
- 7635
- modularco-ordinationinbuildingThenewcarptsarshouldensurebetterco-ordination.Colourco-ordinationandnavigationarethetopmainpriorities.Policyco-ordinationwithothermajorcountriesisneeded.Somedegreeofdivergenceisinevitable,butmoreco-ordinationisneeded.Tha...
- 16437
- 问题详情:Colorisveryimportantinourlife.Ithasalottodowithour 1.Colorsaredividedintohot,coldorneutral(中*的)ones.Redandyelloware2 colorsbecausetheymakearoomfeelwarmer.Theyalsomakethewallsseem3 usthantheyreallyare.Wethinkthatblueandgreenarecold.They...
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- 问题详情:YouSkate,TheyDonate,WeCanFillaPlateThisholidayseason,ContraCostaOncologyhasonceagainpartneredwithWalnutCreekonIcetohelpraisefundsfortheFoodBank.Foreveryiceskatingticketthatiscollected,ContraCostaOncologywilldonatetotheFoodBank.Formoreinformat...
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- I'dlikeyoutomeetmyco-worker,RobertJehan.Yualsosufferedhandandneckinjuries,accordingtoaco-workerattheconsulate.IknowJane.Sheismyco-worker.Sheisaverycharminggirl.Hisco-workercallshimoutonhissalesreportsandaccuseshimoffraud.ForAmericans,thedistinctionb...
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