草房子白雀的一的批注

写电离方程式KHSO4 NA2CO3 NH4CO3 Ba(OH)2 1．Children___a lot of sweets have got bad teeth.A .eat B.are eating C.that eat D.which eat2.--Mike is not coming to the football game this afternoon.---It's a shame!He____!A.promises B.promised C.will promise D.had promised3.It's not necessary for 四道 有图 要具体讲解点击图片 可以放大 有图可放大 4道高一英语选择题!高手进入!每题给下理由,谢谢1.We all envy Ella very much because she lives____A.such rich and full life B.such rich and full a life C.so rich and full life D.so rich and full a life2.The girl___,like a lovely beaut h2so4+ba(oh)2的电离方程式 高二化学（12分）Al(OH)3的电离方程式可表示为（12分）Al(OH)3的电离方程式可表示为：H­2O+AlO+H+Al(OH)3Al3平衡移动原理解释下列有关问题：（1）向Al(OH)3沉淀中加入盐酸,沉淀溶解,其原因是_____ 【1】Never _____ forget the days when _____ together with you.A.shall I; I lived B.shall I; did I live C.I shall; I lived D.I shall; did I liveA.为什么?【2】_____,the amount left in the bank is hardly worth mentioning.A.Having paid my taxes B. CuSO4与Ba(OH)2能反应吗?如果可以,化学方程式是怎样的? 急求CuSO4和Ba(OH)2溶液混合的离子方程式 新制Cu(OH)2的配制中试剂的滴加顺序? 青霉素发明者 利用cu2（oh）2co3和合适的的试剂制取cu如题 青霉素发明者是谁 菲林试剂的本质是新配制的CU(OH)2 那可否用新配制的CU(OH)2代替菲林试剂课本说要用0.1G/ML的NAOH和0.05G/ML的CUSO4 我的意思是能不能用其他量浓度配制?只要配制成CU(OH)2就好? 菲林试剂与Cu(OH)2的区别菲林试剂不就是用NaON和Cu（SO）4配成Cu(OH)2吗?那为什么不直接用氢氧化铜来验证还原糖呢? 【英语】高一英语选择题（四）-Do you look up every new word ( ) you come across while you are reading?-No,unless it affects my reading.A.whatB.thatC.whichD.as 什么字世界各国同用 NaCl AgNo3 Na2CO3 Hcl 四种物质能不能不加任何试剂就辨别出来?KOH Na2SO4 Cu(NO3)2 hcl呢 高一英语选择题 需要理由It's said that one kind of time machine _____ by a sceientist ,with which man can travel wherever he would like. A.had been invented B.has been invented C.had been dicovered D.has discovered 高一英语选择题,要有理由( )1._____ the bus, but also he left his books at home. A.Not only he missed B.Not only he did miss C.Not only missed he D.Not only did he miss( )2.I really appreciate your invation, but there 1.they invented me to their party,____is kind of themA.this B.that C.which D.as2.his dog became ill ,____made him very lonely A.this B.that C.which D.as3.there is not so much noise in the country _____in big citiesA.as B.where C.which D.that 汉字是世界上使用人口最多的文字,曾对（ ）、（ ）等国的文字产生过重要的影响. 1.How_____that he looked so angry?A.it came out B.did he come out C.was it come about D.did it come about2.Mr.Bush,headmaster of the school,______accepts suggestions made by his students,does he?A.rarely B.often C.usually D.always 汉字曾对日本的文字产生过哪些重要影响 汉字是世界上使用人口最多的文字,曾对什么什么等国的文字产生过重要的影响 汉字曾对那两个国家的文字产生过重要的影响 汉字大约产生于（）多年前.汉字是世界上使用人口最多的文字,曾对（）`（）等国的文字产生过重要影响.怎么填 实验室提供了酚酞,稀盐酸两种试剂和必要仪器,能区分开的物质组是是A氯化钠 氢氧化钠 碳酸钠B氯化钠 氯化钙 氢氧化钠C氢氧化钠 氢氧化钙 氯化钙 D氯化钠 氢氧化钙 氯化钙 实验室提供了酚酞,稀盐酸和必要的仪器,利用上述条件可以区分的一组物质是A.NaCl,CaCl2,NaOHB.NaCl,NaOH,Na2CO3C.NaCl,Ca(OH)2,CaCl2D.NaOH,Ca(OH)2,CaCl2 在实验室中,欲使碱性溶液变为中性,下列试剂中最好选用哪种组合 1.氢氧化钠溶液2.稀盐酸3.石灰水4.酚酞试液答案不唯一,用哪种写序号即可,最好说说为什么