作者botarabbit (我以姓闻为荣)
看板Chemistry
标题[普化] 请教四个小问题
时间Thu Oct 25 03:50:54 2007
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有四个问题...
做到半夜还是做不懂
希望高手可以帮忙解答....
1.Copper metal readily dissolves in dilute aqueous nitric acid to form
blue (Cu2+) and nitric oxide gas.
What has been reduced?
2.How much slaked lime(Ca(OH)2) would be needed to neutralize the acid
in a lake that contains 4.00x10^5 M and has a volume of 2.60 miles
(1.20cubic = 5.00x10^12 L )?
3.What is the PH of a solution prepared by diluting 25.0 mL of 0.874 M HCl
to a volume of 575 mL ?
4.It is considered highly dangerous to splash barefoot in puddles
during a lightning storm. Why?
帮解.. 感激不尽
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5件儿时无聊事
1.玩米缸，将手插入米缸满满的米里面搞下搞下。
2.别人碰到自己，一定要碰回去。
3.地下有格子磁砖时，一定要一格一格走(不可以踩界，要完全在格内，斑马线亦同)。
4.超级市场里踩住购物推车滑行。
5.削铅笔一定要用削铅笔机削到最尖(易断)。
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◆ From: 140.120.224.144
※ 编辑: botarabbit 来自: 140.120.224.144 (10/25 03:51)
※ 编辑: botarabbit 来自: 140.120.224.144 (10/25 03:52)
1F：→ shy723:这好像算是高中化学里面最基本的题目...没任何深度 10/25 14:11