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以硫铁矿（主要成分为FeS2，还有少量CuS、SiO2等杂质）为原料制备绿矾晶体（FeSO4•7H2O）的工艺流程如图： （1）“酸浸”过程，矿渣中的Fe2O3与稀H2SO4反应的离子方程式 ...
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高三下学期化学《》真题及答案
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下列矿石的主要成分表达错误的是
黄铁矿(FeS
2
)
菱铁矿(FeCO
3
)
黄铜矿(CuFeS
2
)
辉铜矿(CuS)
某钢铁厂高炉炼铁的主要反应过程如下1请在方框内填入相应物质的化学式2写出步骤②③的化学方程式②___
膨润土的主要成分是SiO2和Na2OK2O等
转炉终点渣的主要成分由CaOMgOSiO2构成
下列有关物质用途的说法正确的是
氢氟酸具有强酸性，可用于刻蚀玻璃
生石灰、铁粉、硅胶是食品包装中常用的干燥剂
硫铁矿（主要成分为FeS
2
）是工业制硫酸的主要原料，也可用于炼铁
工业上用焦炭在高温下还原SiO
2
制取粗硅：
硫铁矿烧渣主要成分Fe2O3Fe3O4FeOSiO2等是工业生产硫酸的废渣利用硫铁矿烧渣制备铁红氧化
硅胶的主要成分是SiO2
釉中SiO2主要由引入SiO2是釉的主要成分提高石英含量釉的膨胀系数熔融温度粘度
下列矿石的主要成分表达错误的是
黄铁矿(FeS
2
)
菱铁矿(FeCO
3
)
黄铜矿(CuFeS
2
)
辉铜矿(CuS)
工业上煅烧硫铁矿用来生产硫酸用X.表示硫铁矿中的主要成分煅烧反应的化学方程式为4X+11O22Fe2
FeS
2
Fe
2
S
3
FeSO
4
FeS
工业上煅烧硫铁矿用来生产硫酸用X.表示硫铁矿中的主要成分煅烧反应的化学方程式为4X+11O2高温2F
FeS
2
Fe
2
S
3
FeSO
4
FeS
下列有关物质用途的说法正确的是
氢氟酸具有强酸性，可用于刻蚀玻璃
生石灰、铁粉、硅胶是食品包装中常用的干燥剂
硫铁矿（主要成分为FeS
2
）是工业制硫酸的主要原料，也可用于炼铁
工业上用焦炭在高温下还原SiO
2
制取粗硅：
.下列有关物质用途的说法正确的是
氢氟酸具有强酸性，可用于刻蚀玻璃
生石灰、铁粉、硅胶是食品包装中常用的干燥剂
硫铁矿（主要成分为FeS
2
）是工业制硫酸的主要原料，也可用于炼铁
工业上用焦炭在高温下还原SiO
2
制取粗硅：
下列矿物的主要成分属于氧化物的是
黄铁矿
紫晶矿
白钨矿
黄铜矿 （主要成分为FeS
2
） （主要成分为SiO
2
） （主要成分为CaWO
4
） （主要成分为CuFeS
2
）
工业上煅烧硫铁矿用来生产硫酸用X.表示硫铁矿中的主要成分煅烧反应的化学方程式为4X+11O22Fe2
FeS
2
Fe
2
S
3
FeSO
4
FeS
以硫铁矿主要成分为FeS2为原料制备氯化铁晶体FeCl3·6H2O的工艺流程如下回答下列问题1酸溶及
下列矿石的主要成分表达错误的是
黄铁矿(FeS
2
)
菱铁矿(FeCO
3
)
黄铜矿(CuFeS
2
)
辉铜矿(CuS)
焊剂431中的主要成分是MnOSiO2和CaF2
石英玛瑙玻璃的主要成分都是SiO2因此它们是同质多象矿物
硫铁矿又称黄铁矿是生产硫酸的原料其主要成分为FeS2850℃~950℃时硫铁矿在空气中煅烧可能发生下
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Youmayhavegrownuplivingwithsistersandbrothersorthismaybeyourfirsttimesharingyourlivingspacewithsomeoneelse.1Howeveritcanalsobeagreatpartofyourcollegeexperience.Followthesetipstomakesureyouandyourroommatekeepthingspleasantandsupportivethroughouttheyear. Beclearfromthebeginning. Maybeyouhateitwhensomeoneinterruptsyouwhenyouaresleepingeverymorning.Maybeyouneedtenminutestoyourselfbeforetalkingtoanyoneafteryouwakeup.2It'snotfairtoexpecthimorhertopickuponthemrightawayandcommunicatingwhatyouneedisoneofthebestwaystogetridofproblemsbeforetheybecomeproblems. 3 Thismayseemsimplebutit'sprobablyoneofthebiggestreasonswhyroommatesexperienceconflicts.Don'tyouthinkhe'llmindifyouborrowhisshoesforaquicksoccergame?Forallyouknowyoujuststeppedoveranuncrossableline.Don'tborrowuseortakeanythingwithoutgettingpermissionfirst. Beopentochange. Youshouldexpecttolearnandgrowandchangeduringyourtimeatschool.4Asthetermprogressesrealizethingswillchangeforbothofyou.Becomfortableaddressingthingsthatunexpectedlycomeupsettingnewrulesandbeingflexibletoyourchangingenvironment. FollowtheGoldenRule. 5Nomatterwhatyourrelationshipisattheendoftheyearyoucantakecomfortknowingyouactedlikeanadultandtreatedyourroommatewithrespect.
下列有关分子原子的说法中错误的是
Homelessnessisabigproblemacrosstheworld.Manypeopleandorganizationsareworkingtosolveit.MelYoungfromScotlandandHaraldSchmiedfromAustriaaretwosuchpeople.In2001thetwomenattendedaninternationalconferenceabouttheproblemofhomelessness.Latertheybegantowonderiffootballcouldhelpsolvetheproblem.In2003theydecidedtostarttheHomelessWorldCuporganization.Itchoosesandtrainslocalhomelesspeoplefortheyearlyfootballcompetition.Todayabout500peoplefromalmost50countriesplayintheHomelessWorldCup.Andtheprogramischanginglives. DamienisfromIreland.Formanyyearshestruggledwithdrug毒品addiction.Butin2006heplayedforIreland'sHomelessWorldCupteamandsincethenhehasbeendrugfree! ManyoftheHomelessWordCupplayerslikeDamienhavestruggledwithdrugaddiction.Howeversomeplayersarehomelessbecauseofpoverty.Alexisoneofthem.HesaysIwasborninMatharethebiggestworstslum贫民窟inKenya.Icouldnotfindanythingtoeat.Alsoschoolingwasaproblem.MylifestartedwhenIstartedplayingfootball.FootballgaveAlexjoy.Ittaughthimtoworkhardandhelpedhimbelievethathecouldachievesomething. Footballcanevenhelppeoplewhohaveexperiencedextremetragedy.NajibayoungmanfromAfghanistanhaslivedthroughmuchwar.Manyofhisfamilymembershavedied.Butfootballhashelpedhimsurvive.ItisonlyduringthegamesthatIdonotthinkaboutmysituation.I'mnotinterestedinanythingotherthanfootballandit'stheonlythingIdesireNajibexplains. Drugspovertyandwararecommoncausesofhomelessness.Playinginafootballcompetitionmaynotdirectlytreatdrugaddictionsolvepovertyorendwarbutitcangivepeopleemotionalstrengthandhelpthemlearnimportantlifeskills. 1WhatdoweknowabouttheHomelessWorldCup? A.Itisheldeveryyear. B.Itfirsttookplacein2001. C.Itistheideaoftwotroubledfootballlovers. D.Itwasintroducedataninternationalconference. 2AfterplayingintheHomelessWorldCupAlex. A.gaveuptakingdrugs B.begantolivearichlife C.gotagoodschooleducation D.becameconfidentaboutthefuture 3WhatdoestheunderlinedworddesireinParagraph4probablymean? A.Remember B.Watch C.Want D.Create 4Whatwouldbethebesttitleforthistext? A.Footballforeveryone B.Lasthopeforthehomeless C.Endhomelessnessfromnowon D.Beathomelessnessthroughfootball
如图若点P在反比例函数y=x＜0的图象上过点P作PM⊥y轴于点MN为x轴上一点若△PNM的面积为3则k=
Assoonaswewentaourshiplefttheport.
Mostpeopleagreethatapetaddsjoytoaperson'slife.Scientistsarenowfindingthathavingapetmaykeepitsowner1.Andgoodhealthmayaddyearstoaperson'slife. Scientistshavebeen2thelinkbetweenpetsandhealthforyears.In1990astudywasdonewithpeopleaged65andolder.It3thatpetownerswenttothedoctorlessthanpeople4pets.Dopetsmakepeople5?Arepeopleabletohandletheireverydaylivesbetter?AlanBeckwhoisaresearchersaysthat6theanswertothequestionsisyesthenhavingpetsmaybeagoodidea. Canpetsalsohelppeoplelivelonger?RebeccaJohnsondidastudyto7.Johnsonteachesnurseshowtocarefor8people.Herstudyshowsthathavingpetsmaycausepeopleto9moreslowly. Thehumanbodymakesmanychemicals.Someofthechemicalsmakepeoplefeel10.Othersmakepeoplefeelbad.InJohnson's11levelsofthegoodchemicals12whenpeoplewerearoundpetswhilelevelsofthebadchemicalswentdown.Thegood13seemedtoslowtheagingofcells.Ifthisis14maybepeopleshouldspendmoretimewiththeir15.Thenpeoplemightfeelbetterand16longer. Youmightbeallergic过敏的topets.Oryoumaynotwantto17apet.Neverfear.Aroboticorcomputerpetmaybejustthethingforyou. ScientistsaretestingcomputerpetsliketheroboticdogAIBO.Theywanttoseeif18petscanhelppeopletheway19dogsdo. Willaroboticpet20therealpetsittingwithyouonthesofa?Somethingtellsusthatitwillprobablybecomeareality. 1A.healthy B.excited C.mad D.hurried 2A.carryingout B.makingup C.lookingat D.breakingdown 3A.warned B.showed C.reminded D.advised 4A.through B.beyond C.against D.without 5A.busier B.funnier C.happier D.angrier 6A.though B.until C.if D.unless 7A.findout B.putout C.turnout D.setout 8A.sick B.friendly C.old D.lovely 9A.age B.move C.walk D.grow 10A.bored B.surprised C.sleepy D.good 11A.study B.work C.story D.case 12A.changed B.varied C.fell D.rose 13A.sides B.chemicals C.studies D.dogs 14A.important B.unusual C.true D.impossible 15A.children B.pets C.friends D.neighbors 16A.live B.wander C.stay D.travel 17A.headfor B.searchfor C.cheerfor D.carefor 18A.family B.computer C.baby D.toy 19A.brave B.quiet C.faithful D.real 20A.destroy B.replace C.improve D.accompany
不等式组的解集在数轴上表示正确的是
按要求回答下列问题．钙离子可用符号表示为
水是生命之源我们应该了解爱护水资源． 水通电分解实验中检验正极产生的气体的方法是
用如图的装置演示气体扩散现象其中一瓶装有密度比空气大的红棕色二氧化氮气体另一瓶装有空气．为了有力地证明气体发生扩散装二氧化氮气体的应是选填A或B瓶．扩散现象说明气体分子在不停的做．
MyparentsdivorcedwhenIwas5makingmymotherasingleparent.Wehadlittlemoneybutmymomgavemealotoflove.EachnightshesatmeonherlapandspokethewordsthatwouldchangemylifeKemmonsyouarecertaintobeagreatmanandyoucandoanythinginlifeifyouworkhardenoughtogetit. AtfourteenIwashitbyacarandthedoctorssaidIwouldneverwalkagain.EverydaymymotherspoketomeinhergentlelovingvoicetellingmethatnomatterwhatthosedoctorssaidIcouldwalkagainifIwantedtobadlyenough.ShedrovethatmessagesodeepintomyheartthatIfinallybelievedher.AyearlaterIreturnedtoschool﹣walkingonmyown! WhentheGreatDepression大萧条occurredmymomlostherjob.ThenIleftschooltosupportthefamily.AtthatmomentIwasdeterminednevertobepooragain. MyrealchangeoccurredonavacationItookwithmywifeandfivekidsin1951.Iwasangrythatthesecondclasshotelchargedanextraforeachchild.ThatwastooexpensivefortheaverageAmericanfamily.Idecidedtoopenamotel汽车旅馆forfamiliesthatwouldneverchargeextraforchildren.Therewereplentyofdoubtersatthattime. Notsurprisinglymotherwasoneofmystrongestsupporters.Weexperiencedalotofchallenges.Butwithmymother'swordsdeeplyrootedinmysoulIneverdoubtedwewouldsucceed.Fifteenyearslaterwehadthelargesthotelsystemintheworld﹣HolidayInn.In1979mycompanyhad1759innsinmorethanfiftycountrieswithanincomeof1billionayear. Youmaynothavestartedoutlifeinthebestsituation.Butifyoucanfindataskinlifeworthworkingforandbelieveinyourselfnothingcanstopyou. 1WhenKemmonswasalittlechildwhathismotherusuallytoldhimwas. A.funny B.touching C.fighting D.encouraging 2Formtheauthor'sviewwhoplayedthemostimportantpartinmakinghimwalkbacktoschoolagain? A.Mother. B.Teachers. C.Friends. D.Relatives. 3AccordingtothepassagewhatmadeKemmonsstartamotelbyhimself? A.Hispreviousbusinesssuccessofvariouslevels. B.Histerribleexperienceinthehotel. C.Hismom'ssupport. D.Hiswife'ssuggestion. 4InyouropinionwhichofthefollowingbestdescribesKemmons'mother? A.Modesthelpfulandhardworking. B.Carefulhelpfulandbeautiful. C.Lovingsupportiveandstrongwilled. D.Strictsensitiveandsupportive.
以下是教案备课库的基本实验请回答下列问题． 1实验①的实验现象是 2实验②中比较空气和呼出气体中二氧化碳含量大小的操作是 3依据实验③的实验现象说明了二氧化碳的化学性质是 4④中盛有红磷的燃烧匙要选填“缓慢”或“快速”伸入集气瓶中．
下列物品中通常情况下属于导体的是
一种声光报警器的电路如图所示各元件均能正常工作对可能出现的现象描述正确的是
Theirsucceedmadeusexcited.
Ishouldbeallowedtogivechancestomakemyown.
WantawonderfultravelinLondon?Don'tmissthefollowing! CartoonMuseum ThishighlyentertainingLondontouristattractioncoversthehistoryanddevelopmentofBritishcartoonsfromthe18thcenturytothepresentday.Youcanfindadetailedcollectionofalltypesofcartoonsinthismuseumincludingcaricatures讽刺漫画andrareexamplesofcartoonartit'sanidealplacetoentertainkidsofallagesaswellasaseriouscollectionforanimationenthusiasts. Thereareoverninehundredpiecesonexhibitandthemuseumregularlyholdseventswherebothchildrenandadultscanparticipate.BookingfortheseeventsisrecommendedduetothepopularityyearroundofthisLondonMuseum. Telephone02075808155 ChislehurstCaves ChislehurstinLondonishometochalkcavesthatwereminedbyhandforover8000years.AtourofthesecavesisanexcitingwaytoseehowBritishpeoplehaveimpactedontheirenvironmentoverthousandsofyears. Telephone02084673264 TheOldOperatingTheatreMuseum TheOldOperatingTheatreMuseumisoneLondonmuseumofferingafascinatinginsightintothemedicalprofessionofthepast.This300﹣yearoldherbgarret阁楼isBritain'sonlysurvivingoperatingtheatrewithawoodenoperatingtableandanobservationstandfromwhichvisitorscanwitnesssurgeryperformed. Telephone02071882679 CurzonMayfairCinanaMuseum RecentlyvotedoneofLondon'sbestcinemasbyTimeOutreaderstheCurzonMayfaircinemaiseverythingyouwouldexpectfromthisparticularpartoftownluxurious奢华的andtasteful.Showingmostlyart﹣houseandindependentfilms.theCurzonMayfairisuniqueintheworldofLondoncinemaforitsroleinscreeningthesefilmsforindustryandpress. Telephones03333210104 1WhatcanwelearnfromtheCartoonMuseum? A.Itisdesignedonlyforkids. B.ItistheoldestcartoonmuseuminBritain. C.Visitorscantakepartintheactivitiesheldinit. D.Onemustbookthemuseuminadvancetovisitit. 2Whichwillyoucallupifyou'dliketoknowsurgeryofthepast? A.02075808155・ B.02071882679. C.03333210104. D.02084673264. 3Whichofthefollowingmayattractanaturelover? A.ChislehurstCaves. B.CartoonMuseum. C.CurzonMayfairCinemaMuseum. D.TheOldOperatingTheatreMuseum.
Theyhaveachanceinterviewtheheadmaster.
Beawareofyourown长处andweaknesses.
吸烟有害健康香烟燃烧产生的烟气中含有尼古丁化学式C10H14N2下列说法正确的是
工业上常用高温煅烧石灰石主要成分碳酸钙制取二氧化碳．计算要制得8.8t的CO2气体至少需要分解多少吨碳酸钙
如图已知直线a∥b∥c直线mn与直线abc分别交于点ACEBDFAC=4CE=6BD=3则BF=
使我感到惊讶的是这个小女孩的小提琴拉得这么好.使用主语从句和表语从句
实验室有三瓶无色液体分别可能是水酒精过氧化氢溶液某兴趣小组欲加以鉴别请你帮助他们完成实验方案．1通过闻气味的方法首先能鉴别出来的一种物质是2小组同学提出可以用二氧化锰固体区分剩余两种无色液体分别取少量液体于试管中加入二氧化锰其中一只试管内观察到则该试管盛装的液体是过氧化氢溶液．
氨气NH3在一定条件下可以和氧气发生化学反应如下图所示分析并回答有关问题． 1甲物质中氮氢元素的质量比为 2写出丙物质的化学式 3甲乙丙丁四种物质中属于氧化物的有 4参加化学反应的甲乙的分子个数比为
不是你而是他为这件事情负责.not…but
实验操作中应该严谨规范下列说法正确的是
YesI'llbereadyatnineinthemorning.Goodbyedearandthanksagain.IthadnotbeenaneasytelephonecallforMrsRobsontomake.HerdaughterhadbeenverykindofcourseandhadimmediatelyagreedtopickherupanddrivehertothestationbutMrsRobsonhatedtosaythatsheneededhelp.Sinceherhusbanddiedtenyearsagoshehadbeenproudofherselfonherindependence.Shehadcontinuedtoliveintheirlittlehousealone. ThateveninghowevershewasstandingatherlivingroomwindowstaringoutattheSOLDnoticeinthesmallfrontgarden.Herfeelingsweremixed.Ofcourseshewassadatthethoughtofleavingthehouseasitwasfullofsomanymemories.Butatthesametimeshewaslookingforwardtospendingherlastyearsneartheseabackinthelittleseasidetownwhereshehadbeenbornandgrewup.Withthemoneyfromthesaleofthehouseshehadboughtalittleflatthere.Sheturnedfromthelivingroomwindowandlookedroundattheroom.Therewasasmallfishtankwithtwogoldfishinit.WhenaskedwhyherhusbandusedtosayIt'snicetohavesomethingaliveintheroom.Sincehehadpassedawayshehadalwayskeptsomegoldfishandalwayshadsomethingaliveintheroom. ThenextmorningashertrainwaspullingoutofthestationMrsRobsoncalledtoherdaughterKateyouwon'tforgettocollectthegoldfishwillyou?Thechildrenwilllovethem.It's… IknowKateinterruptedgently.It'snicetohavesomethingaliveintheroom. 1AccordingtothefirstparagraphweknowthatMrsRobson. A.wastiredoflivingalone B.dislikedturningtopeopleforhelp C.wasnotlikedbyherdaughter D.wantedtolivewithoutherhusband 2HowwasMrsRobsonfeelingonherlastnightinthehouse? A.Sadandhopeful. B.Happybutworried. C.Proudandsad. D.Happybutnervous. 3MrsRobsonwasgoingto. A.beinhospital B.livewithherdaughter C.travelabroadalone D.liveinherhometown 4WhatcanwelearnaboutMrsRobsonfromthepassage? A.Shedislikedkeepingpetsathome. B.Shemissedherhusbandverymuch. C.Shehadthesamehobbywithherhusband. D.Shewasworriedaboutherdaughter'sbadmemory.
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