Uncle Michael

[匿名]

回覆: 1

2007-02-03 8:53 pm

Reaction of silver ion and iodide ion

simon

回覆: 2

2007-02-03 3:37 am

(化學) 鋰己是最強的還原劑，那麼鋰離子如何被還原。

用戶182392

回覆: 1

2007-02-03 6:53 am

A-Level chem- lattice energy problem

[匿名]

回覆: 1

2007-02-02 7:23 pm

What means by XLB ?

[匿名]

回覆: 2

2007-02-01 8:33 pm

what is the percentage of water vapour in breathed air?????

用戶176664

回覆: 1

2007-02-01 1:49 am

基礎化學---反應機理 and 反應級數 [5分]

wing shan

回覆: 1

2007-02-01 6:04 am

[F.4 CHEM*] Experiment to determine empirical formula

STEVIE-G™

回覆: 2

2007-01-30 3:53 am

化學問題[摩爾計算]

[匿名]

回覆: 1

2007-01-30 4:44 am

有關urea-methanal的實驗

用戶名稱

回覆: 2

2007-01-27 8:17 pm

ph試紙and石灰水

[匿名]

回覆: 1

2007-01-27 9:32 pm

是否檸檬酸有離子?

[匿名]

回覆: 2

2007-01-27 9:48 pm

我想問各金屬的顏色??

朋友

回覆: 2

2007-01-28 2:07 am

咩係重水??

朋友

回覆: 4

2007-01-28 2:08 am

咩係超重水??

erica

回覆: 2

2007-01-28 3:23 am

chemistory

[匿名]

回覆: 2

2007-01-28 3:35 am

reactioN 問題~

2003

回覆: 1

2007-01-27 5:04 am

dry cell

SSSS

回覆: 2

2007-01-22 6:25 am

ammonia係咪reducing agent黎架??

恩樂

回覆: 2

2007-01-20 12:38 am

點解共價化合物唔會溶於水

unoldman2000

回覆: 2

2007-01-17 7:21 am

Cu2+的焰色試驗

unoldman2000

回覆: 1

2007-01-08 6:27 am

碲(Te)和碘(I)的質量

用戶110394

回覆: 2

2007-01-07 10:17 pm

BONDING

用戶227559

回覆: 3

2007-01-05 2:58 am

請問matter同substances的分別

志聰

回覆: 2

2007-01-05 2:24 am

急問 - about ionic compound

世鴻

回覆: 2

2007-01-04 2:44 am

pH值問題

用戶219822

回覆: 2

2007-01-04 2:47 am

我有d化學唔懂呀

Hoi Kit

回覆: 3

2007-01-04 6:15 am

摩爾數唔明....

世鴻

回覆: 1

2007-01-04 4:54 am

pH值問題

震峰

回覆: 3

2007-01-04 5:05 am

NH4OH 氫氧化銨溶唔溶於水？？

[匿名]

回覆: 2

2007-01-03 2:35 am

Chem Problem(40marks for best ans)

STEVIE-G™

回覆: 2

2007-01-02 9:47 pm

化學問題[電解]

用戶169029

回覆: 1

2007-01-02 3:30 am

Vitamin C 問題？(chemical name)

[匿名]

回覆: 1

2007-01-02 1:47 am

此物質(substance) 和彼物質(matter)有何分別？

[匿名]

回覆: 2

2007-01-02 1:36 am

唔識計呀~~~~急急急急！！！ｔｈｘｔｈｘｔｈｘ～～

放 rakion acc

回覆: 2

2007-01-01 4:23 am

光的超難問題

SUP DOG

回覆: 2

2007-01-02 12:23 am

幫幫手 計算的! 10 marks

Felicia Lam

回覆: 1

2006-12-28 5:35 am

F.5 Chemistry Question 2

Felicia Lam

回覆: 1

2006-12-28 5:38 am

F.5 Chemistry Question 3

junkie_ka

回覆: 2

2006-12-29 7:37 am

酵母+砂糖變成二氣化碳的方程式

Tavia

回覆: 1

2006-12-29 10:39 pm

冷凍結晶？？

wing shan

回覆: 2

2006-12-30 5:35 am

metal reactivity既問題..

婉瑩

回覆: 1

2006-12-30 6:35 pm

我想問一些化學問題~中四的~有沒有高人可以救救我

[匿名]

回覆: 2

2006-12-31 8:01 pm

點解係flame test中..一定要用platinum/nichrome wie??

2003

回覆: 1

2006-12-31 8:58 pm

about cracked light bulb

2003

回覆: 1

2006-12-31 9:03 pm

Na(CI)

2003

回覆: 2

2006-12-31 9:05 pm

soluble,insolube compound

Raymond Tsang

回覆: 1

2007-01-01 3:04 am

Acid-Oxalate question

用戶178426

回覆: 1

2007-01-01 5:18 am

趕住救命...please help me~~!thx

lankwanyin

回覆: 3

2007-01-01 8:54 am

可卡因是不是毒品?為什麼有些鎮咳藥中也有這種成份?

wai shing

回覆: 2

2007-01-01 6:41 am

一些metal reaction問題