冷風

Xxx

回覆: 3

2011-08-16 10:05 pm

chemistry chemistry asking 20p

用戶25529

回覆: 3

2011-07-03 8:42 pm

alkene reaction very dufficult

no name

回覆: 1

2010-07-20 6:18 am

benzene同methylbenzene

[匿名]

回覆: 2

2009-11-30 3:14 am

About MgCO3 and CaCO3

[匿名]

回覆: 3

2009-10-03 7:45 am

煲蠟的化學作用? (請提供equation和解釋)

[匿名]

回覆: 2

2009-09-24 2:52 am

AL Organic Chem

Jacky

回覆: 3

2009-09-05 3:24 am

strength of C=C and C-C

[匿名]

回覆: 2

2009-09-02 6:34 am

water tesion

Jacky

回覆: 2

2009-08-29 1:36 am

Homolysis

[匿名]

回覆: 2

2009-08-18 7:17 am

有咩方法可以漂白?

用戶250240

回覆: 2

2009-08-18 9:42 pm

some chemistry questions

用戶250240

回覆: 3

2009-08-18 9:49 pm

two chemistry questions

[匿名]

回覆: 3

2009-08-13 8:03 am

phy(ac circuit)

[匿名]

回覆: 2

2009-08-09 3:23 pm

covalent bond of F.3 chemistry

[匿名]

回覆: 1

2009-08-08 5:27 pm

AL chem k.kwong

[匿名]

回覆: 2

2009-08-07 1:12 am

點解graphite is more energetical

2003

回覆: 1

2009-07-09 3:48 am

點解空氣入面要有八成係nitrogen?

[匿名]

回覆: 2

2009-06-30 6:26 am

chem organic chem

Mastina

回覆: 3

2009-06-21 1:54 pm

AL chemistry Question

B

回覆: 2

2009-06-14 4:14 am

preparation of salt

Heyman

回覆: 2

2009-06-07 4:18 am

AL chem - addition of alkenes

用戶108812

回覆: 2

2009-06-02 2:13 am

urgent!! hkale chem 96I(4di)

[匿名]

回覆: 3

2009-05-14 1:24 am

chem既 positively charged既問題-20

大人

回覆: 2

2009-05-09 4:17 pm

點解唔可以用HCl去acidified substances

STEVIE-G™

回覆: 2

2009-04-11 9:38 pm

d-棟元素絡合物

[匿名]

回覆: 3

2008-11-18 7:43 am

oxidation of alkanol

[匿名]

回覆: 2

2008-11-10 12:23 am

(CH3)3CCH2Cl , 1'RCL , doesn't participate in typical SN

Peng

回覆: 3

2008-10-24 7:07 am

溶液之ph值問題

[匿名]

回覆: 2

2008-10-23 1:05 am

Why is ice less dense than liquid water?

2003

回覆: 2

2008-10-20 6:50 am

iodoform test

Joey

回覆: 2

2008-10-14 1:45 am

Fe(II) salt + con. HNO3 點解出NO?

[匿名]

回覆: 2

2008-09-27 1:18 am

點將alkane 變alkene

2003

回覆: 2

2008-09-25 1:06 am

haloalkane

2003

回覆: 2

2008-09-12 6:40 am

ammonia and hydrogen fluoride

A student

回覆: 3

2008-09-01 6:32 am

Electronegativity oF NH3 and NH4+

2003

回覆: 2

2008-08-24 3:31 am

isomer

大人

回覆: 1

2008-08-29 5:41 pm

chem勁人入入黎幫手..metal ion同ammonia reaction既問題....

靚靚

回覆: 3

2008-08-04 10:27 pm

化學 MC

Ryan

回覆: 2

2008-08-04 6:50 pm

化學基本知識的問題...(族/週期)

SSS

回覆: 4

2008-07-21 9:32 pm

Simple molecular structure和 Giant Covalent structure 點分? 20分

用戶84895

回覆: 1

2008-07-30 11:24 pm

幾個organic chem問題2

用戶84895

回覆: 1

2008-07-28 10:13 pm

幾個organic chem問題

用戶15238

回覆: 3

2008-07-13 9:26 pm

有關食用鹽同海水問題~~~~~~~~~

2003

回覆: 1

2008-07-21 6:02 am

water condenser

2003

回覆: 3

2008-07-19 6:29 am

hydrogen bond

90sivad

回覆: 3

2008-07-18 3:07 am

一個低B的問題

[匿名]

回覆: 2

2008-07-16 8:39 pm

點樣分iron(II)同iron(III) sulphate呀?

On9

回覆: 2

2008-07-13 1:02 am

關於元素週期表中的鑭系、錒系元素及112~118 (Uub~Uuo)元素...

[匿名]

回覆: 2

2008-07-11 7:11 pm

tautomerism and functional group isomerism

梁永亨

回覆: 3

2008-07-10 10:05 am

有鹼性電池咁有冇酸性電池嫁?