2He 2No So下小2 2OHˉ中的2分表代表什么意义

2He 2No So下小2 2OHˉ中的2分表代表什么意义 Zn(OH)2沉淀he Mg(OH)2怎么区别 计算物质中的氮元素的质量分数(NH小4)小2 SO小4 小时代插曲.oh oh oh oh oh baby小时代2里林萧去崇光家遇见宫铭那段的插曲,歌词里有oh oh oh oh oh baby.是什么歌啊? Mr Green lives in a village.He has a big 1 and a strong dog.He has no work 2 in winter,so he goes It smell like a Fine oh no 2个是什么意思? 化学式Cu(OH)2为什么OH用括号括起来,而NaOH中的OH为什么不用, Mg(OH)2中的括号是什么意思? 如何除去Cu（OH)2中的CuSO4 如何检验溶液中的CU(OH)2 除去Ca(oh)2中的CaO Ca(OH)2 中的括号是指? 绝地战警2里的歌,2小时19分开始唱的一直是oh so oh oh oh oh oh 节奏很喜欢,求帮啊···· 排序1 no,this is Bob……1 no,this is Bob.2 OK,I'll tell him. Anything else?3 No problem. but does he have your number?4 I'll make sure he gets it.5 Yes,can he call me bake when he gets the bag?6 I think so. Thanks a lot.7 Hollo,May?8 Tell him th 1 he songs so _____ that I want to sleep.(better)2 he is so ____that we love him(better)同样是so 在什么情况下和adj.or adv.呢 oh so thumbs up means no?中文翻译 Jack is a student and studies at the No. 2 Middle School. _____.A. It was the same with Mike B.So it is with Mike C. So is Mike D. So does Mike 帮忙分析下咯. 一道初三化学题（分别向含有下列离子的溶液中的加少量稀硝酸…）请教一道题：分别向含有下列离子的溶液中的加少量稀硝酸,这些离子数目不会改变的是（）A、K+ B、CO3^2- C、OH- D、NO^3-小