用戶34588

STEVIE-G™

回覆: 2

2009-04-19 3:49 am

AL Chem Paper II -Kc

Man

回覆: 2

2008-11-28 5:01 pm

買CaCO3

[匿名]

回覆: 2

2008-11-21 2:18 am

calcium carbonate in eggshell

[匿名]

回覆: 2

2008-11-08 11:18 pm

攞命難題(Chemistry) 7條

[匿名]

回覆: 2

2008-11-11 1:47 am

邊到有得買酒精?.....(10點)

[匿名]

回覆: 2

2008-11-10 12:23 am

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

[匿名]

回覆: 1

2008-11-07 4:41 am

AL化學漂白水!!!!!

浚

回覆: 3

2008-11-01 6:27 am

chem問題 頗多

Peng

回覆: 3

2008-10-24 7:07 am

溶液之ph值問題

[匿名]

回覆: 1

2008-10-20 8:13 am

IS NaOH A PRIMARY STANDARD?

[匿名]

回覆: 4

2008-10-11 9:49 am

2Questions about AIR (F3 chemistry) [十萬火急!!!!!!!]

Keela

回覆: 3

2008-10-13 8:50 am

F.2 Science有唔明;D

用戶137465

回覆: 3

2008-10-08 3:08 am

化學滴定漂白水樣本加入稀硫酸的作用????

woolam3

回覆: 3

2008-10-08 8:02 am

為何 carbon dioxide 係 CO2, 不是C2O4?

111

回覆: 2

2008-08-25 7:27 pm

Chem 數問

大人

回覆: 1

2008-08-25 5:13 pm

simple chemical cell問題..chem勁人幫幫忙

Tieria

回覆: 3

2008-08-25 4:42 am

一條簡單化學問題！

[匿名]

回覆: 2

2007-12-19 7:33 am

CHEM TAS。如何準備NH3 GAS??

[匿名]

回覆: 2

2007-11-27 10:26 am

香港那裡可以買到氦氣, 一般價格如何~?€€

傻瓜青蛙

回覆: 2

2007-11-26 8:16 pm

chem chem chem

WAI YAN

回覆: 2

2007-11-20 5:06 am

有咩化學物質,可以即刻洗甩碘酒?

[匿名]

回覆: 3

2007-11-16 4:30 am

為什麼當飽和溶液冷卻時，結出的晶體會較少；而當飽和溶液慢慢冷卻時，結出的晶體會較大？？？

Tieria

回覆: 4

2007-11-16 4:37 am

化學小問題！

Angie

回覆: 4

2007-08-24 7:12 pm

點解每次個市稍為好D, D有錢佬就開始出聲 .

Ming Yan

回覆: 4

2007-07-04 5:42 am

點解俾漒水(硫酸)淋,要俾鹽水洗呢??

CHI CHUNG

回覆: 3

2007-01-15 3:37 pm

香港邊度有一瓶(約1L)既 氫氧化鈉NaOH 及 一瓶(約1L)既 碳酸鈉Na2CO3 買?

[匿名]

回覆: 2

2007-01-12 6:18 am

f.3 Chemistry Questions

[匿名]

回覆: 2

2006-11-03 6:10 pm

Buffer question - very hard, 15points

[匿名]

回覆: 5

2006-10-24 8:36 pm

藥房賣的75%酒精是甲醇嗎?

用戶100998

回覆: 9

2006-10-19 9:25 pm

點先算係一個好男朋友

Yanni Wong

回覆: 2

2006-10-18 6:46 am

ｃhem - Fehling's and Tollen's reagent

[匿名]

回覆: 3

2006-10-18 5:35 am

電子排列問題

2003

回覆: 3

2006-10-17 1:42 am

chem mc