Uncle Michael

³·

回覆: 1

2008-06-14 7:11 am

Chemistry Reacting masses

用戶97935

回覆: 1

2008-06-14 6:10 am

F.3 Area and Volume

[匿名]

回覆: 1

2008-06-14 5:52 am

Nitrogen

[匿名]

回覆: 4

2008-06-14 7:02 am

Ethanol

用戶20139

回覆: 1

2008-06-14 3:05 am

我想問下碳酸,醋酸,石灰酸既化學式係咩??

用戶228162

回覆: 5

2008-06-13 8:49 pm

數學方程ｘ２，好急！！！！！　１０點呀～

[匿名]

回覆: 2

2008-06-10 8:18 pm

水解反應=脫水反應?

[匿名]

回覆: 1

2008-06-10 5:14 am

化學一問(急)金屬與非金屬的問題

用戶197603

回覆: 2

2008-06-09 6:28 am

what is 化學能

[匿名]

回覆: 3

2008-06-09 2:45 am

Solid potassium superoxide同potassium oxide的顔色分別係？

SUET

回覆: 1

2008-06-08 9:37 pm

mineral water{{{急}}

用戶17243

回覆: 1

2008-06-08 6:33 pm

單質自身性質????????]]]

chiu man

回覆: 2

2008-06-08 5:39 am

三氯化金的二聚物AuCl3

CHING WAI

回覆: 1

2008-06-05 10:39 pm

chemistry-urgent (20points)

[匿名]

回覆: 2

2008-06-07 10:54 am

[CHEM] acid-alkali 3 條問題

用戶130917

回覆: 1

2008-06-07 6:40 pm

Metal + Acid/ Water, Observations

用戶26317

回覆: 1

2008-06-07 7:53 pm

Oxalic acid + sodium hydroxide

用戶237002

回覆: 1

2008-06-07 4:16 am

question about weak and strong acid (identiflying )

用戶20139

回覆: 1

2008-06-07 12:48 am

我想問下呢條既化學方程式係d咩?

用戶237002

回覆: 1

2008-06-07 4:21 am

question about weak and strong alkali (identiflying)

用戶20139

回覆: 1

2008-06-07 4:28 am

我想問下呢幾題化學題點解答案係咁??

Chan

回覆: 1

2008-06-06 8:22 pm

關於中二I.S. 題

東杰

回覆: 2

2008-06-06 5:58 pm

重量g要乘幾多先係oz ??

See Long

回覆: 1

2008-06-06 7:21 am

空氣與溫度的關係

maplingfairy

回覆: 2

2008-06-06 1:19 am

S3 Chemistry (metals)

用戶93165

回覆: 2

2008-06-05 6:38 am

Cm question of CE

[匿名]

回覆: 2

2008-06-04 10:11 am

cm轉換升的方程式是什麼~怎樣計算

A student

回覆: 2

2008-06-03 4:52 am

Why sulphur monoxide is unstable

＊露緹希雅＊

回覆: 2

2008-06-04 3:42 am

最強的酸和鹼是甚麼?超過pH14用甚麼表示?

[匿名]

回覆: 3

2008-06-04 4:20 am

[化學]反應質量好難呀, 有冇高手幫下我(20分)

A student

回覆: 1

2008-06-04 1:31 am

Linear and planar structures

[匿名]

回覆: 1

2008-06-03 10:49 pm

pH Calculation

[匿名]

回覆: 2

2008-06-03 3:58 am

怎樣把混在一起的氧和氮分開

bscat2005

回覆: 1

2008-06-03 6:02 am

關於chemical cell問題

kapo

回覆: 2

2008-06-03 3:32 am

Redox reaction (2)

VIŃCĘÑT

回覆: 1

2008-06-02 10:33 pm

Nomenclature for multiple functional groups

VIŃCĘÑT

回覆: 2

2008-06-02 9:52 pm

Nomenclature

[匿名]

回覆: 4

2008-06-02 9:51 am

CHEM IUPAC naming~~急~~~20點

-

回覆: 3

2008-06-02 4:09 am

Sulphur係咪等於Sulfur?

kapo

回覆: 1

2008-06-02 12:49 am

Electron diagrams of nitrogen dioxide and hydrogen peroxide

人桀

回覆: 1

2008-06-02 1:33 am

幫幫手 4條簡單化學問題

kapo

回覆: 2

2008-06-02 12:53 am

Redox reaction (1)

bscat2005

回覆: 3

2008-06-01 10:18 pm

About the molecules of the atom

[匿名]

回覆: 2

2008-06-01 9:02 pm

distilled water /pure water /distillate

用戶111854

回覆: 2

2008-06-01 8:30 pm

chem equ

[匿名]

回覆: 1

2008-06-01 7:38 pm

F.2 Science Electric current

用戶31456

回覆: 1

2008-06-01 6:56 pm

chem^^COME HERE`````

開順

回覆: 3

2008-06-01 5:33 am

iron(II)同iron(III)

放逐

回覆: 1

2008-06-01 5:11 am

茶能否做指示劑?

放逐

回覆: 1

2008-06-01 5:15 am

中二的科學