Uncle Michael

kath

回覆: 4

2007-09-29 6:29 am

科學問題@@-本生燈2

Bill Tam

回覆: 1

2007-09-28 6:24 am

兩條化學方程式

用戶92111

回覆: 2

2007-09-25 7:45 pm

ｃｈｅｍ~~

Bill Tam

回覆: 2

2007-09-25 7:37 am

ml 和 cm3 (20points)

sammi

回覆: 1

2007-09-21 6:51 am

有什麼化學試劑曾經用作滅火劑?

Doris

回覆: 2

2007-09-21 7:30 pm

燃燒-空氣的成份

[匿名]

回覆: 2

2007-09-22 2:28 am

為什麼燃燒過後的毛巾仍是凍呢?

[匿名]

回覆: 5

2007-09-23 10:21 pm

咩叫H-??

sald2008

回覆: 1

2007-09-23 11:22 pm

石油和天然氣響海床下形成~但係點解有D油田響陸地發現

hiu tung

回覆: 3

2007-09-24 5:21 am

H2O and F2O, which have a higher boiling point?

[匿名]

回覆: 2

2007-09-24 2:11 am

苯二氨既英文名同formula

paul2357paul

回覆: 3

2007-08-28 9:56 pm

ionic equation

tye

回覆: 1

2007-09-07 6:04 am

科學上的名稱[游離]能指產生嗎?

[匿名]

回覆: 1

2007-09-07 2:40 am

Organic Chemisty (very urgent!)

[匿名]

回覆: 1

2007-09-07 2:12 am

reaction between magnesium and dilute sulphuric acid

Bill Tam

回覆: 1

2007-09-07 4:14 am

關於二氧化硫&硫酸(20points)

guaeiogaeighi

回覆: 1

2007-09-07 6:05 am

chem calculation

[匿名]

回覆: 2

2007-09-07 2:21 am

化學高手請進

VaNeSS

回覆: 2

2007-09-06 9:50 pm

由一塊銅(Cu)去製造成水合硫酸銅(CuSO4)的方法,過程

[匿名]

回覆: 2

2007-09-06 6:13 am

請翻譯及解釋coordinated intermediate

Malcolm

回覆: 2

2007-09-05 3:47 am

你們知不知道Alan MacDiarmid是誰? 請回答!

用戶7489

回覆: 2

2007-09-01 11:10 pm

化學問題:計二元酸的摩爾質量。(中文)

[匿名]

回覆: 1

2007-08-28 8:23 am

滴定時,用去離子水沖洗錐形瓶是可行的,點解?!

用戶23300

回覆: 1

2007-08-29 10:21 pm

AL partition coefficient (best answer 30!)

用戶7489

回覆: 1

2007-08-27 10:54 pm

解釋:鋅是由閃鋅礦與碳共熱生成。

NewBoy

回覆: 2

2007-08-27 6:34 am

想問下shield呢個字o係chem入面既解釋...

Kelly

回覆: 3

2007-08-27 8:24 am

Heating the metal oxide

紫玲

回覆: 1

2007-08-26 8:05 am

沾有碘化鉀溶液的濾紙是什么顏色?(20點)

NewBoy

回覆: 1

2007-08-26 7:06 am

about electronic shell

TamTam

回覆: 1

2007-08-25 7:18 am

Physical Chemistry (2)

TamTam

回覆: 1

2007-08-25 7:17 am

Physical Chemistry (1)

2003

回覆: 1

2007-08-23 3:10 am

calculation

Tina

回覆: 3

2007-08-23 4:28 am

電池會否變輕?

用戶23300

回覆: 1

2007-08-22 11:47 pm

AL CHEM pastpaper Question (urgent! please help!)

C14

回覆: 2

2007-08-22 7:04 pm

為什麼燒唔同的金屬，火會有不同的顏色？

kaming

回覆: 1

2007-08-22 8:32 pm

an egg in vingear

hingwood

回覆: 1

2007-08-22 5:07 am

Development&Coaching Centre

hingwood

回覆: 1

2007-08-22 4:39 am

Development&Coaching Centre

用戶6513

回覆: 3

2007-08-20 11:06 pm

數學題~英譯中~要條式同解釋~15x2points

用戶196622

回覆: 1

2007-08-20 9:26 pm

maths

guaeiogaeighi

回覆: 2

2007-08-20 2:25 am

chem ~molarity queation

Jasmine

回覆: 1

2007-08-18 5:47 am

chem empirical formula 一問

explorer

回覆: 1

2007-08-16 10:44 pm

chem ce 1997 paper 1 #8a(iv) 個題ge filter paper(KI)有D咩野用??

2003

回覆: 2

2007-08-16 8:29 am

permanganate=manganate ?

用戶198839

回覆: 4

2007-08-15 10:17 pm

wt is disproportionation ?

[匿名]

回覆: 1

2007-08-13 2:23 am

SF6 Hexafluoride

鯉躍龍門

回覆: 2

2007-08-11 10:11 pm

40分：有甚麼物質放在水中會爆炸﹖

明

回覆: 1

2007-08-11 8:37 pm

點解我睇番會考既歷年試題既電子結構圖同我本教科書所教既有出入?

[匿名]

回覆: 2

2007-08-11 8:05 am

F.6 Chemistry questions

George Mak

回覆: 2

2007-08-11 6:04 am

hybridization