首页
试卷库
试题库
当前位置:
X题卡
>
所有题目
>
题目详情
如图是实验室制取气体的装置图,请回答下列问题: (1)写出仪器m的名称 . (2)实验室用高锰酸钾制取氧气的化学方程式是 .制取一瓶干燥的氧气,仪器接口的连接顺序是a→ → →...
查看本题答案
包含此试题的试卷
教案备课库《》真题及答案
点击查看
你可能感兴趣的试题
如图是实验室制取气体的一些装置据图回答有关问题.1写出指定仪器的名称①②2写出一个实验室用装置B制取
如图为实验室常用的实验装置示意图请回答下列问题1若实验室需制取干燥的CO2气体你选择的干燥装置是写装
实验室制取气体所需装置如下图所示请回答下列问题1装置中标a的仪器的名称是2实验室用A.装置制取氧气的
实验室制取气体所需装置如图所示请回答下列问题1装置中标a的仪器的名称是.2实验室用A.装置制取氧气的
实验室制取气体所需的装置如下图所示请回答下列问题1实验室制取二氧化碳所选用的发生装置为收集装置为均填
如图是实验室制取气体的常用装置.请回答下列问题1某同学用装置A.F制取氧气其化学方程式是实验结束后要
实验室制取某些气体所需的装置如下图所示请回答下列问题1实验仪器a的名称是2选用A.D.装置可制取的气
如图是实验室制取气体的改进装置请据图回答下列问题AB.C.第4题图1仪器a的名称是2实验室可用上述三
下列是实验室制取和收集气体的常用装置图请根据实验要求回答下列问题第2题图1请写出装置图A中标号①的仪
实验室制取气体的实验装置如下图请回答问题1选择D.作为实验室制取气体的发生装置的依据是请你写出一个适
如图是实验室常用的气体发生装置请回答问题.1用A装置制取气体时反应物的状态和反应条件应满足什么要求2
实验室制取气体所需装置如图所示请回答下列问题1装置中标a的仪器的名称是.2实验室用A.装置制取氧气的
下图是实验室制取气体常用的几个装置图请回答有关问题11分写出以上装置中标出的仪器名称a_______
在实验室中可选用右图所示装置制取几种常见的气体请回答有关问题1A.装置可制取多种气体请写出制取其中一
如图是某同学在实验室制取某气体的部分过程.请回答下列问题1图1的操作中出现错误的有填序号2从图1获悉
如图是实验室制取和收集气体的常用装置图请根据所给的装置图回答下列问题1请出装置图C中标号②的仪器名称
下面是实验室制取气体及气体性质实验装置图请回答下列问题1写出图中有标号仪器的名称A.____B.__
如图是实验室制取气体的常用装置请回答下列问题1写出图中标号仪器的名称①.2实验室可用氯酸钾和二氧化锰
.如图是实验室制取和收集气体的常用装置图请根据所给的装置图回答下列问题1请写出装置图C.中标号②的仪
在实验室中可选用右图所示装置制取几种常见的气体请回答有关问题1A.装置可制取多种气体请写出制取其中一
热门试题
更多
theprogramtheyhavetostaythereforanothertwoweeks. A.Notcompleting B.Notcompleted C.Nothavingcompleted D.Havingnotcompleted
﹣MikeourteamwillplayagainsttheRocketsthisweekend.Iamsurewewillwin. ﹣! A.Congratulations B.Cheers C.Nevermind D.Goodluck
Itwasinthesmallhousewasbuiltwithstonesbyhisfatherhespenthischildhood. A.whichthat B.wherethat C.thatwhere D.thatwhich
That'sanunpleasantthingtosayaboutyourfatherafterhe'sdoneforyou. A.something B.anything C.all D.that
化学与我们生产生活息息相关请你结合生活常识解决下列问题 1写出一条生活中常用的节约用水方法 2写出两种常用灭火的方法
下列说法正确的是
实验室配制500克6%的氯化钠溶液需要称取氯化钠克
物质的下列性质中属于化学性质的是
“保护好我们的环境”是每位公民应尽的义务.下列说法正确的是
在化学反应C+O2CO2中下列说法正确的是
化学变化的本质特征是
下列实验设计能够实现其对应实验目的是
有关物质的用途错误的是
Theshockingnewsmademerealizeterribleproblemswewouldface. A.what B.how C.that D.why
已知氯原子的结构示意图如图所示据图回答 该原子核外有个电子层核电荷数为在化学反应中该原子容易电子形成离子.
Mydadisakindgentlemanandamanoffewwords.Throughoutmylifeheofferedadvicerarely.ButthewordswerealwaysappropriatetothesituationIwasfacing. AsateenwhenIstruggledwithmakingsenseoftheworldaroundmehesaidAllthingsarerelative.Hetaughtmetherightviewoftheworld.WhenIwasofferedtheopportunitytobeamanagerofanorganizationasanundergraduatestudentIaskedhimforadvicebecausehewasaseniormanagerofalargecompany.HisadvicewassimpleOnlywhenyoubecomethemanagercanyouhaveavisionforhowyoucanmaketheorganizationbettermanagementisn'taboutpowerandit'saboutleadership.IlearnedwhatIneededwasnotonlytoberesponsibleformyteambutalsotohaveleadingability.WhenIwasfeelingdownheexplainedThinkthatyoumakethewrongchoicesinlifesometimes. Mydadis86nowlivingonhisownandenjoyinglifewhilestrugglingwiththechallengesthatagingbrings.Hekeepsapositiveattitudedespitelongpainandthelossesthatcomeinlife.Althoughwelivequitefarawayfromeachotherwetalkdailyonthephoneandhesharesthejoysofmyyoungfamily.AsItellhimhowwe'reheadingoffcyclingoronatriporouttoplaytennisnowhistypicalresponseisDoitwhileyoucan.Thisisveryimportant.Wecan'tbesureofthefuture.Myfather'sadviceisliketheancientdictum格言ofcarpediem﹣seizethedayandenjoyittothefullest. Mydadrarelylecturedme.HetrustedmeandhelpedmewhenIneededhelp.Hispatienceandwisdomhavebeentruegiftsinmylife.AsIdoubtmyabilityandmymotivationIrecallhismostrecentgiftofwisdomDoitwhileyoucan.It'senoughtojustgetmestarted. 1Whydidtheauthor'sdadtellhimAllthingsarerelative.?Nomorethan10words 2Whatqualitiesshouldamanagerhaveaccordingtotheauthor?Nomorethan5words 3Whatisthepurposeoftheauthor'sfathertalkingwithhimonthephoneeveryday?Nomorethan10words 4Howdoyouunderstandtheunderlinedsentenceinthelastparagraph?Nomorethan10words 5Howdoyoufeelabouttheancientdictumofcarpediem?Nomorethan20words
﹣IhearIronManIIIisonrecently.Let'ssetoffforthecinematoappreciateitnow. ﹣It'sabout10PM.I'msotiredthatImustgotobed. A.Let'sfindsomeoftheaction. B.Howdoyoufindit? C.It'sentirelyuptoyou. D.Youcan'tbeserious.
下列物质属于纯净物的是
BritishwriterJohnDonneoncesaidNomanisanislandeverybookisaworld.AsanenthusiasticreaderIcan'tagreewiththelatterpartofthesentencemore.EverysummerIendeavortofindsomepeacefulplaceswhereIcanattacksomeclassicswithoutbeingdisturbed.ThomasHardywantstolivefarfromthemaddingcrowd.Iamnofriendtochaoseither. IreadGeorgeOrwell's1984inaNewEnglandbeachsidecottagewithnolocksonthedoorsnotelephonesortelevisionsintherooms.1984isagoodbookthatneedsdeepreflection.AttemptingSoundandFurylyingonthebedofapoorly﹣occupiedmotelhoweverwaslessfruitfulImadeitthroughoneandaquartervolumesbutthenmyeyelidsweresoheavythatIcouldn'tkeepthemopen. ButthissummerIfindmyselfataloss.I'mnotquiteinterestedinJ.D.SalingersayorFrankenstein.There'salwaysWarandPeacewhichI'vecoveredsomedistanceseveraltimesonlytogetboggeddownintheWarpartsetitasideforawhileandrealizethatIhavetostartoverfromthebeginningagainhavingforgotteneveryone'snameandsocialrank.Howappealingtosimplyfallbackonafavorite﹣oncemoreintoTheCalloftheWildorAliceintheWonderlandwhichfeelsalmostlikecheatingtooexcitingandtoomuchfuntoproperlybelongtoseriousliterature. Andthenthere'sJohnSteinbeck'sTheGrapesofWrath.Thistitledoesnotamazebutconfuse.We'renevershortofsourgrapesbutwe'veneverheardofangrygrapes.Anywaygrapesaremyfavoritefruitofsummer.Thesestonefruitscanalwaysmakemefeelcheerfulandpeacefulallatonce. 1WhatcanweinferfromParagraph2? A.TheauthorhasacottageinNewEngland. B.1984isabookthatneedscarefulthought. C.Bothofthereadingattemptswerenotfruitful. D.SoundandFurywassetinapoorly﹣occupiedmotel. 2Whatdoestheunderlinedphrasegetboggeddowninparagraph3referto? A.Getconfused. B.Becarriedaway. C.Beinterpreted. D.Makenoprogress. 3Whydoestheauthorsayreadinghisfavoritebooksfeelslikecheating? A.Hefinishesthemquickly. B.Heshouldreadsomethingserious. C.Hebarelyunderstandsthem. D.Hegetsamazedbytheirtitles. 4Whatcanweknowabouttheauthorfromthispassage? A.ThomasHardyishisfriend. B.Heshowstalentforliterature. C.Heisquiteforgetful. D.Heisaliterary﹣mindedman. 5What'stheauthor'spurposeinwritingthepassage? A.Tosharehisreadingexperience. B.Toencouragereaderstoreadbooks. C.Tointroducegoodbookstoreaders. D.Tocondemnthechaoticworldwelivein.
动植物的生存离不开空气.空气中含量最多的物质是
Withself﹣servicefacilities﹣supermarketstonameone﹣beginningtoappearallthetimewe'renowrelyingonintegritymorethanever. Integrity﹣thequalityofdoingtherightthingnomatterifanyoneiswatchingornot﹣hasbeenhighlyvaluedinChinasinceancienttimes.Andthephrase立木取信probablybestexplainshowintegrityworksintherelationshipbetweenpeopleandtherulingofanation. ThisphrasecomesfromtheWarringStatesperiod475﹣221BCduringwhichChinawasn'tyetaunifiedcountryandwasconstantlyatwar.StatescarriedoutreformstomakethemselvesstrongerwiththemostthoroughandinfluentialonebeingthereformoftheStateofQinintroducedbystatesmanShangYang395﹣338BC. Shang'sreformfocusedonfarmingandgivingrewardstosoldierswhofoughthardduringwars.ButatfirstpeoplehadlittletrustandconfidenceinShang. SohedecidedtoprovehimselfbyputtingawoodenpoleatthesouthgateofthecapitalofQinofferingthosewhotookthepoletothenorthgatearewardof10goldpiecesbeforelongraisingitto50.WhenamandidashesaidShangpaidhim50goldpiecesaspromised.WordsoonspreadandpeoplebegantorealizethatShangwasamanofhisword.Thereformswerefinallypushedforward. TodayintegritystillplaysanimportantroleinChinesesocietywhichiswhyit'sincludedasoneofthe12coresocialistvaluesinChina. Chinaisalsoplanningtobuildasocialcreditsystembytheyear2020whichwillkeepcitizens'misbehaviors﹣﹣evenminortrafficviolations﹣onrecordsothattrustcanbeestablishedamongpeople. Withoutasystemaconmancancommitacrimeinoneplaceandthendothesamethingagaininanotherplace.Butacreditsystemputspeople'spasthistoryontherecord.It'llbuildabetterandfairersocietyexplainedWenQuanabloggerwhowritesabouttechnologyandfinancetoBBCNews. 1HowlonghasintegritybeenvaluedinChina?within5words 2Pleaseuseonesentencetoexplainthephrase立木取信within15words 3What'sthemeaningoftheunderlinedphraseamanofhisword?within10words 4WhatisChinaplanningtodotoachieveintegrity?within15words 5Whyisintegritysoimportant?within20words
下列化学反应属于化合反应的是
某同学取一定浓度盐酸与石灰石反应将生成的气体通入澄清石灰水中始终未见浑浊.为了弄清原因他设计以下方案进行探究验证请你帮他补充完整以下内容.
Whydoyouwantanewjobyou'vegotsuchagoodonealready? A.that B.where C.which D.when
下列物质中N元素的化合价为0价的是
Theywereabroadduringthemonthswhenwewerecarryingouttheinvestigationortheytoourhelp. A.wouldhavecome B.couldcome C.havecome D.hadcome
为了给三瓶失去标签的无色溶液Na2CO3CaCl2稀HCl贴上正确的标签某同学首先给三瓶失去标签的无色溶液编号为ABC然后用滴管分别取少量ABC两两混合后产生如下现象1A与B混合无明显现象2A与C混合后产生白色沉淀3B与C混合后产生气泡.由此某同学推断出ABC正确的顺序是
生活中可以使硬水软化成软水的常用方法是
学好化学能使我们更好地认识各种现象更能合理地解决实际问题.下表列出生活中部分常见的问题和解决方法. 请你用化学知识分别叙述上表中三种解决方法的原理 1 2 3
It'snearlyexamtimesocheckoutsomeofthebestfreeappsaroundtohelpyoumanagethestressofexamsandensureyouarestudyingeffectivelyoverthecomingweeks. ExamCountdown Thisappcanhelptoremindyouhowmanydayshoursandminutesyouhaveuntilyourexam.Thiscanhelptomotivateyoutohitthebooksbeforeit'stoolate. BlockTheInternet AreyouconstantlycheckingFacebookwhenyoushouldbewritinganessay?OrperhapsareyoudistractedbyabattleinLeagueofLegends?DownloadthisapptogetridofonlinedistractionsbytemporarilyblockingInternetsitesonyourmobile.Simplyaddthewebsitesyouwanttoblockandtheperiodoftimetoblockthemfor.Guaranteetogetyourselffocusedonthatassignment. CBT﹣iCoach TheUSDepartmentofVeterans老兵AffairsdevelopedtheappCBT﹣iCoachtoassistwithinsomnia失眠andhelppeoplewhowouldliketoimprovetheirsleepinghabits.Itprovidesseveralkeypartsinformationaboutsleepandinsomniastrategiesforimprovingsleeprelaxationskillsandahelpfulsleepdiary. Yoga Yogahasgreathealthbenefitsbothforthemindandbodyandwillhelpyoutoperformatyourbestwhileatuniversity.Downloadayogaappandhaveyourownpersonalyogainstructorinyourlivingroom.Youcanchoosefromshortorlongworkoutsandhaveaqualifiedinstructorteachingyouhowtodoeachpose.Choosefromavarietyofyogaroutinesandwatchtheinstructionalvideos.Goonstretchoutthosesoremuscles. 1Ifyouarenotgoodatmanagingyourtimebeforeanexamyoucouldtry. A.BlockTheInternet B.ExamCountdown C.CBT﹣iCoach D.Yoga 2Whichappisthemostusefulforastudentaddictedtovideogames? A.Yoga. B.CBT﹣iCoach. C.ExamCountdown. D.BlockTheInternet. 3WhatdoweknowaboutCBT﹣iCoachfromthisarticle? A.Ithelpstobuildupstrongermuscles. B.Ithelpsstudentstomanagetheirstudytime. C.Itmonitorsandimprovespeople'ssleepingquality. D.Itisusedtotreatsoldierswithsleepingdifficulties. 4WhenusingtheYogaappthestudentsareexpectedto. A.askapersonalYogacoachtoinstructthemfacetoface B.choosesomeshortworkoutstoavoidbeingsotired C.choosesomelongworkoutstoguaranteethetrainingeffect D.followtheinstructionalvideostostretchoutthemuscles 5Whatdoestheauthormainlyintendtotellusinthispassage? A.Someappstohelpstudentsbetterprepareforexams. B.Theinfluenceofourstudyhabitsonourexamresults. C.Severaltipsonhowtothrowoffanxietybeforeexams. D.Detailsofsomeappstohelptoimprovelearningskills.
热门题库
更多
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
高一下学期数学
教案备课库
高一上学期数学
高一上学期化学
教案备课库
教案备课库