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甲基环丙烷的二氯代物的数目有（不考虑立体异构）（ ）
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3-甲基戊烷的一氯代产物有不考虑立体异构
2种
3种
4种
5种
已知丙烷的二氯代物有四种异构体则其六氯代物的异构体数目为
两种
三种
四种
五种
2016年·海南中学模拟七下列化合物中同类别同分异构体数目最多的是不考虑立体异构
二甲苯
丁醇
一氯丁烯
二氯丙烷
已知丙烷的二氯代物有四种异构体则其六氯代物的异构体数目有
2种
3种
4种
5种
.一氯代物有2种二氯代物有3种的有机物是
乙烷
丙烷
2—甲基丙烷
2，2—二甲基丙烷
2-甲基戊烷的一氯代产物有不考虑立体异构
3种
4种
5种
6种
1﹣氯丙烷的二溴代产物有不考虑立体异构
3种
4种
5种
6种
已知丙烷的二氯代物有4种同分异构体则其六氯代物的同分异构体的数目为
2种
3种
4种
5种
下列关于同分异构体的说法正确的是
乙烷的二氯代物和甲烷的二氯代物数目相同
丙烷的一氯代物有3种
苯的四氯代物有3种
C
5
H
12
的同分异构体有4种
3甲基戊烷的一氯代产物有不考虑立体异构
3种
4种
5种
6种
3甲基戊烷的一氯代产物只有不考虑立体异构
3种
4种
5种
6种 【练综合应用】
下列烃中一卤代物的同分异构体的数目最多的是
乙烷
2-甲基丙烷
2,2-二甲基丙烷
2,2-二甲基丁烷
3-甲基戊烷的一氯代产物有不考虑立体异构
3种
4种
5种
6种
3—甲基戊烷的一氯代产物有不考虑立体异构
.3种
5种
4种
6种
下列说法正确的是
乙烷的一氯代物同分异构体有1种，二氯代物的同分异构体有3种
丙烷的一氯代物同分异构体有2种，二氯代物的同分异构体有5种
正丁烷的一氯代物同分异构体有2种，二氯代物的同分异构体有5种
正戊烷的一氯代物同分异构体有3种，二氯代物的同分异构体有9种
丙烷的二氯代物有4种同分异构体则其六氯代物的同分异构体的数目为
2种
3种
4种
5种
3-甲基戊烷的一氯代产物有不考虑立体异构
3种
4种
5种
6种
下列烃在光照下与氯气反应只生成一种一氯代物的有
2﹣甲基丙烷
甲基环戊烷
2，2﹣二甲基丁烷
2，2﹣二甲基丙烷
下列各组有机物中其一氯代物的数目不相等的是
正戊烷和正己烷
新戊烷和2-甲基丙烷
环戊烷和乙烷
丙烷和2,3-二甲基丁烷
丙烷的二氯代物有4种同分异构体则其六氯代物的同分异构体数目是
2种
4种
6种
3种
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物质A～G有如图所示转化关系部分反应物生成物未列出．其中A为某金属矿的主要成分经过一系列反应可得到气体B和固体C．单质C可与E的浓溶液发生反应G为砖红色沉淀． 请回答下列问题 1写出下列物质的化学式BG． 2反应②的化学方程式是． 3利用电解可提纯C物质现以碱性锌锰电池为外电源在该电解反应中电解质溶液是阳极物质是．MnO2是碱性锌锰电池的正极材料电池放电时正极的电极反应式为． 4将0.20molB和0.10molO2充入一个固定容积为5L的密闭容器中在一定温度并有催化剂存在下进行反应①经半分钟后达到平衡测得容器中含D0.18mol则vO2═mol/L•min若温度不变继续通入0.20molB和0.10molO2则平衡移动填“向正反应方向”“向逆反应方向”或“不”再次达到平衡后mol＜nD＜mol． 5写出F→G转化过程中甲醛参与反应的化学方程式．
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锌﹣空气燃料电池可用作电动车动力电源电池的电解质溶液为KOH溶液反应为2Zn+O2+4OH﹣+2H2O═2ZnOH42﹣．下列说法正确的是
下列有关解释正确的是
WXY和Z为原子序数依次增大的四种短周期主族元素．W为空气中含量最多的元素四种元素中X的原子半径最大Y的周期数等于其族序数Z的最外层电子数是最内层电子数的3倍．下列叙述错误的是
化学在生产生活中有着广泛的应用下列物质性质与实际应用对应关系错误的是
镁一空气电池是一种能被水激活的一次性储备电池原理如图所示．下列说法错误的是
化学与生产生活社会密切相关．下列说法中错误的是
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IusedtoonlinealotbutnowIamusedtowithmyfriends. A.chattingstudy B.chatstudying C.chatstudy D.chattingstudying
Findingyourfeetinanewtowncanbehardespeciallyifyou'recoveredinfuranddon'tspeakthelanguage.ButforpetsnewtoMarlboroughhelpisathand. MarlboroughSPCAandtheRailwayCaféinBlenheimhavejoinedforcestohelpwelcomepetsandtheirpeopletotheareawithmorningteas.Theyhopethemorningteaswillgettailsandtongueswagging狗摇摆尾巴aswellasgivingadviceonhowtomakethemoveeasier. RailwayCaféownerLeanneHarriscameupwiththecreativeplanasawaytohelpwelcomepeopletothearea.LeannemovedtoMarlboroughfromAucklandtwoyearsagoandsaidsheinitiallystruggledtofindfriendsandfeelpartofthecommunity.ComingfromAucklandIthoughtpeoplewouldopentheirdoorsandthattherewouldbeneighborscallingroundwithcake.Iexpectedpeopletocometomeandofcourseitwasn'tlikethat.Ididgetlonely.IhopetosavenewcomershavingtowaitaslongasIdidtofeelpartofitall.Iwouldliketowelcomethemtothetown. Freeplatesofsandwichescakeswillbeofferedforthepeoplewhiletherewillbespecialyoghurtandbananatreatsforthedogs.ThemorningteaswilltakeplaceinthecoveredareaatthebackofthepopularcafébesidetherailwaystationoffGroveRd. LeannesaidshewashappytodevotebothhertimeandefforttogivingbacktothecommunityandfelttheprojectwasagreatfitwiththeSPCA. VolunteeringissuchanamazingthingtodoanditchangedthingsformecompletelyandImetsomeamazingpeoplewithsimilarinterests. SPCAOpShopmanagerKarinaGreenalloriginallyfromtheUnitedKingdomsaidshealsowantedtohelp.Icangiveadviceonhowtoresettlepetsthebestparkstogotowherethebestwalksareandwherethevetcentresareintown.Therewillbevolunteeringchancestooforpeoplewheretheycanhelpoutandhopefullymakefriendstoo. 1HowwillMarlboroughSPCAandtheRailwayCaféhelpnewpets? A.Byofferingmorningteas. B.Bygivingadvicetothem. C.Bycommunicationwiththem. D.Byprovidingaplacetothem. 2WhatwasLeanne'splanoriginallyintendedfor? A.Savinganimals. B.Enlargingherbusiness. C.Makingmorefriends. D.Helpingnewcomers. 3WhathadLeanneexpectedwhenshefirstcametoMarlborough? A.Tobeleftalone. B.Tostruggleforaliving. C.Tobeinvitedtodinner. D.Tofeelpartofthecommunity. 4WhatcanbelearntaboutSPCAOpShopmanagerKarinaGreenall? A.SheoftenmissestheUnitedKingdom. B.ShetakesinterestintheRailwayCafé. C.Sheshowsinterestaboutresettlingpets. D.Shehasorganizedthevoluntaryevents.
ItwasMother'sDayandIwasshoppingatthelocalsupermarketwithmyfiveyearoldsonTenyson.Aswewere1werealizedthatonlyminutesearlieran2womanhadfallenoverattheentranceandhitherheadontheground.3waswithherbuttherewasbloodeverywhereandthewomanwasembarrassedandclearlyinshock.4alotofpeoplestoppedtohelpout.5wewerewalkingtowardsthesceneTenysonbecamevery6aboutwhathadhappenedtotheelderlycouple.He7tomeMumit'snotmuchfunfallingoverinfrontof8.Seeingthattherewasaflowerstall摊位atthefrontofthesupermarketheaddedWhyshouldn'twe9theladyaflower?Itwillmakeherfeelbetter.Iwas10thathe'dcomeupwiththis11idea.Sowewentoverandtoldtheflowerseller12wewanted.Justtakeitshereplied.I13takeyourmoneyforsuchawonderful14.? Bynowmedicalstaffhadarrivedandwere15theinjuredwoman.Wegavetheflowertothewoman'shusbandandItoldhimitwas16myson.AtthattheoldmanstartedcryingandsaidThankyouverymuch.HethenturnedtomeYouhavea17son.HappyMother'sDaytoyou.? Themanbentdownandgavehiswifetheflowertellingherwhoitwasfrom.18beingbadlyhurttheoldladylookedupatTenysonwith19inhereyesandgavehimalittle20. 1A.leaving B.driving C.moving D.stopping 2A.injured B.awkward C.honest D.elderly 3A.Herhusband B.Myson C.Thecrowd D.Theseller 4A.Specifically B.Particularly C.Interestingly D.Fortunately 5A.If B.Since C.While D.Unless 6A.guilty B.curious C.angry D.worried 7A.complained B.said C.lied D.responded 8A.noone B.someone C.everyone D.anyone 9A.lend B.bring C.leave D.buy 10A.amazed B.shocked C.puzzled D.concerned 11A.wise B.sweet C.innocent D.crazy 12A.which B.when C.what D.whether 13A.mustnot B.can't C.maynot D.needn't 14A.scene B.habit C.flower D.deed 15A.checkingwith B.lookingafter C.operatingon D.payingfor 16A.from B.to C.with D.about 17A.respectful B.cheerful C.successful D.wonderful 18A.Outof B.Regardlessof C.Thanksto D.Asto 19A.love B.hope C.pity D.pain 20A.idea B.money C.smile D.comfort
以氯化钾和钛白厂的副产品硫酸亚铁为原料生产硫酸钾过二硫酸钠和氧化铁红颜料原料的综合利用率较高．其主要流程如图 1反应Ⅰ的化学方程式是其中CO2的电子式． 2若反应Ⅰ得到的FeCO3浊液长时间暴露在空气中会有部分固体表面变为红褐色该变化的化学方程式是． 3反应Ⅰ需控制反应温度低于35℃其目的是． 4反应Ⅱ的反应类型为． 5反应Ⅲ常被用于电解生产NH42S2O8过二硫酸铵．电解时均用惰性电极阳极发生的电极反应可表示为． 6已知煅烧FeCO3的化学方程式是4FeCO3+O22Fe2O3+4CO2．现煅烧464.0kg的FeCO3得到316.8kg产品．若产品中仅仅有杂质FeO则该产品中Fe2O3的质量是kg．
假如英语课上老师要求同桌之间交换修改作文请你修改你同桌的以下作文文中共有10出语言错误每句最多有两处.每处错误仅涉及一个单词的增加删除或修改. 增加在缺词处加一个漏字符号∧并在其下面写出该加的词. 删除吧多余的词用斜线\划掉. 修改在错的词下划一横线并在该词下面写出修改后的词. 注意1.每处错误及其修改均仅限一词 2.只允许修改10处多者从第11处起不计分. ThetrainleftlatelythatnightandarrivedinMontrealatdawnthenextmorning.AtthestationpeopleeverywherewasspeakingFrench.ThereweresignsandadsintheFrenchbutsomeofthemhadEnglishwordsinsmallerletter.Wedon'tleaveuntilthiseveningsaidLiuQian.Let'sgoingdowntown.OldMontrealisclosethewater.Theyspendtheafternooninlovelyshopsbutvisitingartistsintheirworkplacesbesidethewater.AstheysatinabuffetrestaurantlookedoverthebroadStLawrenceRiverayoungmansatdownwithus.
5Giscomingbutmostofusaren'treallysurewhatitisor1wewantit.Abigpartofthereasonisthat5Gmeansmorethanonething.Ifyouaskdifferentpeopleyou2providewithdifferentanswers. Expertsbelievethat4Gison3wayout.In2020theUKisexpectedtouse5Gthefifthgeneration代ofmobilecommunications.Atpresentitisunknownexactlywhatinfluence5Gwillhaveonpeople'slifebutit'swidelythoughtthat5Gwill4definitebefasterthananythingwehaveseenpreviously. Workwilllikelybecomemucheasieras5GwillallowquickerdownloadsandtheabilitytoworkonlineevenifthereisnoWiFiconnection.Withthe5developof5Gdriverlesscarswillbeabletocommunicatewithothervehicleswhichcanreduceroadaccidents6about10%.Oneofthemost7impressthingswillbethatpeoplecanseewhichseatsonatrainareaccessibleto8theywhenitarrivesatthestation.9getaroundtheworldwillalsobemoreconvenient. Anumberof10companyarenowworkingonbringing5Gtothemarket.Itremainstobeseenhowmuchofthecountry5Gwillcoverandwhethereveryonewillbeabletobenefitfromit.
某废旧锂电池材料含有钻酸锂LiCoO2导电剂石墨和铝粉等．回收废旧锂电池中钴的工艺流程如图 已知KspCoC2O4＝2.5×10﹣9KspCoCO3＝1.5×10﹣13 回答下列问题 1“浸出液”的主要成分是LiHC2O4AlHC2O43“浸出渣”的主要成分是CoC2O4．“浸出”中生成CoC2O4的化学方程式为若H2C2O4用量过大CoC2O4的产率反而会降低原因是． 2“转化”中加入Na2CO3溶液发生反应的离子方程式为阳离子交换膜阴离子交换膜该反应进行的程度较大试用平衡常数K解释原因． 3“电解”时装置如图所示．阳极的电极反应式为电解后a室中的电解液可返回工序继续使用． 4某废旧锂电池粉末中LiCoO2的质量分数为w将mkg该废料进行回收利用电解得到钴nkg钴的回收率为．
下列实验结果不能作为相应定律或原理的证据之一的是 阿伏加德罗定律在同温同压下相同体积的任何气体含有相同数目的分子
NA为阿伏加德罗常数的值．下列叙述正确的是
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