每年1万复利计算器

化学：下面的实验为什么不能达到实验目的? 下列实验能达到预期目的的是A用稀硫酸和大理石反应制取二氧化碳B用铜,稀硫酸和空气为原料制取硫酸铜C将酚酞试液滴入PH小于7的无色溶液中,使溶液显红色答案选B为什么? 下列实验能达到目的的是——A 检验蜡烛燃烧生成的水 这个是正确的B 检验碳酸根的存在 图是盐酸往未知物中滴加 既然A是对的,那这个就是错的但,B错在哪 为什么达不到实验目的 化学题,看不清的地方是,下列实验能达到实验目的,帮帮忙,谢谢 小区,新村用英语怎么说最好有音标, 1.在25℃时,PH=2的盐酸溶液1L和pH=4的盐酸溶液等体积混合,混合溶液的PH值为?2.将pH=8的氢氧化钠溶液与pH=10的氢氧化钠溶液等体积混合后,溶液中的pH值为? 英语高手过来帮我一下这个阅读理解Everyoune has a family neme.But what does it mean?From what do family names come?First some family names come from the place of their homes.Tf a man lives on or near a hill,his family neme may be Hill I 求助英语一篇阅读理解愿意回答的回复我! 英语的阅读理解 David lives in one of the busiest streets in kong hong.He often crosses the road to buy himself some sweets at the shop on the orher side of the street.One day last week his aunt gave him a dollar and he wanted to spend forty ce 阅读题英语求解,问题在回答后追问 积得乘方1、已知a的m次幂=2 ,a的n次幂=3,求a的2m+3n次幂的值2、已知直角坐标系中的点A（x,y）满足方程x+4y-3=0,你能求出2的x次幂 ×16的y次幂 初二,积的乘方.帮帮忙啊谢谢了（2）和（4）谢谢啦=-=感激不尽 一道高一化学题,很简单,在线等、、、就我错的那道题,拜托大家了~点击看大图 NaBr与NaI的混合物5.00g溶于水后,通入224ml的Cl2(标准情况下)充分反应后经检验溶液中含有Br2,将溶液蒸干灼烧后称得重量为3.64g,求原混合物中NaI的质量分数.Br 80 I 127 Cl 35.5 Na 23 The car _____by the side of the road and the driver tried to repair it.A:breaks down B:was breaking down C:has broken down D:broke down不要忘了, (1)Sam's birthday is in the same month Teachers'Day is in.________（2）Bill was born in a snowy day.And everybody was celebrating the New Year.________(3)Fred was born on Fool's Day._________(4)Every child celebrates Tom's birthday because it's Chi Can you feel my heart My love 是什么意思? can you feel my heart?求一首歌.女生唱的.歌词里有can you feel my heart 后面又有i can feel your heart ... 寒假生活指导2013七年级数学答案 请根据句意及英文释义,填写所缺单词．1.The yong man looks very_____(quiet and thoughtful).but in fact he is quiet funny.2.The little girl has an _______(the things that one enjoys doing)in drawing.3.I hope your sisiter can ________(to 2013年的,山东教育出版社的, 会的进来, 会英语的来看下, I love to listen to music 还是I love to listening to music 英语帝看过来,求详解I___your making desserts after lunchtime.A.miss B.prepare C.donate D.regret求详解 We love to the listen to music.这句话对吗? 1.I didn't go to school yesterday,because I was ill.(就化线部分提问)___ ___ he go to school yesterday?2.He went to school early yesterday.(改为一般疑问句)____ he ____ to school early yestrday?3.she bought two coats this morning.(就化 一首英文男声歌 歌词好像有"listen to the music ”和"love love love" Scott loves to listen to music.为什么是love to listen to music Some boys【】(love)【】(listen) to music.2、Don't【】(be)late again.3、Cats like【】（eat) fish.4、My friend enjoys【】（draw） pictures.5、Mr Li【】(speak）English very well. 我的新朋友英语作文