己式庚辛

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Cash
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2012-02-12 6:02 am
鋰電池「T極」是甚麼?
TwoThounsands
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2012-02-14 2:57 am
Potassium Permanganate
用戶28513
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2012-02-14 7:47 pm
化學物質是否一定危害健康?為什麼?
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2012-02-11 1:48 am
sulphur dioxide
[匿名]
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2012-02-07 6:17 am
請問下列化學反應的方向?
TwoThounsands
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2012-02-07 4:04 am
alcohol
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2012-02-05 7:23 pm
Is carbon dioxide symmetrical?
用戶25529
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2012-01-26 1:20 am
2 Chem questions
[匿名]
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2012-01-31 5:23 am
impurification
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2012-02-05 1:09 am
2011-AL-CHEM 1 Q.2(a)(i)
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2012-02-02 10:02 am
[[[急]]]]如何把牛奶中的鈣含量(準確的驗出數量)
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2012-02-01 9:01 pm
permanganate index 用2次excess?
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2012-01-29 8:01 pm
煮開水發生的科學問題
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2012-01-31 4:33 am
AL Chem
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2012-01-27 5:01 am
Charge of noble gas ions~
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2012-01-30 12:46 am
幫我睇睇依个實驗有咩可以改善的地方呀!thx(20點~快)
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2012-01-22 5:03 am
chem practice paper Qns
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2012-01-20 3:19 am
radioactivity是歸類於什麼properties?
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2012-01-20 11:42 pm
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2012-01-19 10:17 am
氫原子、氫離子的大小 ..
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2012-01-16 11:32 pm
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2012-01-15 9:14 pm
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2012-01-16 2:22 am
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2012-01-15 8:04 pm
Chem Problem... thx
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2012-01-05 11:20 pm
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2012-01-06 2:04 am
9 mc questions
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2012-01-06 3:31 am
甲殼素合成實驗翻譯
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2012-01-05 10:15 pm
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2012-01-06 1:21 am
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2012-01-05 2:16 am
Boiling Point (Super Urgent!!)
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2012-01-05 6:21 am
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2011-12-22 4:31 am
鹼性..酸性..傻傻分不清楚
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2011-12-07 7:34 am
Chem Concentration Calculation
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2011-11-26 10:49 pm
sodium chloride filtration~唔該!
[匿名]
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2011-12-01 9:13 pm
如何讓濃度分開?
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2011-12-02 7:02 am
AL CHEM acid base extraction
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2011-10-26 5:06 am
烯烴有無得變做二級or三級醇?
[匿名]
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2011-10-24 4:51 am
carbon reduction question
[匿名]
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2011-10-02 10:33 am
f.3 chem
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2011-09-23 4:11 am
atomic structure question
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2011-09-25 7:47 am
biology! test for starch
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2011-09-25 6:42 am
F.3 Chem (molecules) 10點!!!
小云
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2011-09-21 2:18 am
可逆反應和不可逆反應方程式的問題,有請高手解答
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2011-09-21 1:26 am
f3 chem(22) - Introducing Chem
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2011-09-21 5:57 am
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2011-09-03 12:13 am
國中理化~六大營養素之小討論
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2011-09-01 2:27 am
Chemistry!!!!!!Difficult Qs!!
[匿名]
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2011-08-31 4:47 pm
F.4化學問題(急)wine water milk
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2011-08-27 8:54 am
化學反應(redox)
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2011-08-25 11:36 pm
F4 Chemistry (Bond polarity)
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