David
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等級
Lv 3
[匿名]
回覆: 2
2009-10-07 6:55 am
有冇咩方法可以extract出汽車廢氣中既carbon架
[匿名]
回覆: 1
2009-01-18 3:15 am
03 AL chem pp---polarimetry
[匿名]
回覆: 2
2009-01-16 8:22 pm
About rate of reaction (chem)
foi
回覆: 3
2009-01-15 10:17 am
ionic compounds?????
foi
回覆: 1
2009-01-13 1:23 pm
bondings of elements....
Angelita
回覆: 4
2008-04-09 10:18 pm
ALChem energy profile
用戶157787
回覆: 3
2008-01-18 9:37 pm
化學高手請入
[匿名]
回覆: 2
2008-01-16 2:55 am
why silver nitrate needs to be acidified to test Cl ions??
yuen
回覆: 2
2008-01-16 8:27 pm
(S4O6)2- , (S2O8)2-的 Structure 點畫??? S的Oxidation State 係咩??
用戶21117
回覆: 3
2008-01-04 5:10 am
十分難的chem問題,我相信冇人會識,helpme化學高手
ChunHo
回覆: 2
2008-01-02 11:54 pm
化學!可否講我知係點做出來的!??
Tsz Kwan
回覆: 3
2007-12-13 7:15 am
係唔係全部的金屬都係良好導體
A student
回覆: 2
2007-12-11 4:23 am
Bicarbonate
[匿名]
回覆: 2
2007-12-10 6:25 am
pls help me to answer science question use eng answer thx
joyce
回覆: 3
2007-12-03 7:18 am
關於氫鍵的問題
用戶211785
回覆: 10
2007-09-28 6:46 pm
can not / can't點樣取決來用? 係咪一個人就用can't兩個人用can not?
xx
回覆: 7
2007-09-06 10:35 pm
我想問把一罐汽水入雪櫃的冰格會不會結冰？
大人
回覆: 1
2007-08-30 12:06 am
redox reaction既一題問題
大人
回覆: 2
2007-08-30 12:10 am
元素既小問題
[匿名]
回覆: 6
2007-08-30 12:05 am
英文生字幾個!
ty
回覆: 5
2007-08-28 9:13 pm
翻譯..(10分!!!!!!!急!!!!!!)
用戶198839
回覆: 4
2007-08-15 10:17 pm
wt is disproportionation ?
Silvia
回覆: 1
2007-08-15 11:25 pm
chemistry
1
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