Leo

[匿名]

回覆: 5

2016-04-03 7:20 am

Ca（NO 3）2 + HNO 3 ----->什麼？

[匿名]

回覆: 3

2015-08-19 4:24 pm

高中化學的問題： 若通式爲C6H5-A (A爲NH2、CH3、OH、NO2、Br )的五種物質，可溶於鹽酸溶液的有幾種？(註：C6H5-是苯基)?

[匿名]

回覆: 1

2015-08-20 6:57 am

what is the chemical equation for the decomposition of nitrogen tetroxide?

[匿名]

回覆: 11

2015-08-20 6:38 am

the atomic number of an element is equal to the..?

[匿名]

回覆: 1

2015-08-20 5:44 am

高中化學的問題：請問以下這句話有錯嗎？苯與氯氣經紫外光照射可產生六氯苯。?

Fung

回覆: 2

2015-04-25 7:06 am

為甚麼落鹽可以令蛋浮起但糖不能？

cheuk ying

回覆: 1

2015-01-22 11:40 pm

有沒有人知道那裡化工原料鋪能買到丙酮

[匿名]

回覆: 6

2015-01-18 7:15 pm

刷牙後將牙刷怎麼辦

[匿名]

回覆: 1

2015-01-05 6:30 am

IS Question

[匿名]

回覆: 1

2014-12-13 10:00 pm

化學(reaction+catalyst)

[匿名]

回覆: 3

2014-12-09 10:54 pm

牛仔褲給油性箱頭筆漏墨染到怎去除?

[匿名]

回覆: 1

2014-10-26 8:53 pm

titration

tom insanity

回覆: 1

2014-10-27 8:30 am

about stereoisomers

[匿名]

回覆: 1

2014-10-14 9:02 am

Nucleophilic substitution

cheungwai sum

回覆: 1

2014-10-16 4:30 am

What is situ-generation ?

[匿名]

回覆: 1

2014-09-30 1:29 am

sodium nickel(II) chloride

[匿名]

回覆: 1

2014-09-30 2:25 am

reduction : gain of electron

[匿名]

回覆: 1

2014-08-30 5:58 pm

ionic & metallic compound

　　　　　　

回覆: 2

2014-07-06 7:31 am

'dry'和'anhydrous' 硫酸銅的問題

Edwin

回覆: 1

2014-06-15 7:01 am

chemical bond

fggj

回覆: 2

2014-05-20 5:53 am

F.4 Chem (cell)

用戶73873

回覆: 2

2014-04-13 7:34 pm

hydrogen bond(carboxylic acid)

[匿名]

回覆: 3

2014-04-05 2:20 am

奈米金/銀(colloidal gold/Silver)産品

Lau

回覆: 2

2014-03-30 2:35 am

apple~~~

[匿名]

回覆: 2

2014-03-23 8:08 pm

BP of unsaturated Fatty Acid

[匿名]

回覆: 1

2014-03-26 8:41 pm

CHEM (正負極一問) 請求chem知識豐富人士解答!!!

[匿名]

回覆: 3

2014-03-24 4:17 am

有關酸鹼中和PH值的問題...

[匿名]

回覆: 4

2014-03-19 4:18 am

F.4 Chemistry (Salt)

[匿名]

回覆: 1

2014-03-17 4:40 am

equilibrium Kc (DSE level)

chi chun

回覆: 2

2014-03-11 8:37 pm

物理 車子右側的倒鏡

[匿名]

回覆: 2

2014-02-16 8:39 pm

暖包點解會發熱?

[匿名]

回覆: 1

2014-02-14 6:18 am

CHEM CE 2006 Q4

Roy HO

回覆: 1

2014-02-10 8:40 pm

lux standard

[匿名]

回覆: 1

2014-02-13 5:52 am

F.4 Chem pls help 20點!!!

[匿名]

回覆: 4

2014-02-11 5:12 am

Different changes

[匿名]

回覆: 3

2014-01-22 4:23 am

哥士的漂過鋁盤後還可用嗎?

[匿名]

回覆: 4

2014-01-19 11:14 pm

acidified KMnO4

Small potato

回覆: 5

2014-01-19 5:05 am

How to test acid?

[匿名]

回覆: 3

2014-01-09 10:54 pm

Chemical Suppliers in HK

[匿名]

回覆: 1

2014-01-11 9:22 pm

香港電力公司

2003

回覆: 2

2014-01-04 6:05 am

separating funnel 問題

[匿名]

回覆: 2

2014-01-09 5:43 am

香港有冇地方可以買到化學元素?

[匿名]

回覆: 1

2013-12-14 8:04 am

Chem question in university

[匿名]

回覆: 4

2013-12-12 7:31 am

separation of salts

wis

回覆: 1

2013-12-12 1:34 am

溶氫氧化鉀KOH

[匿名]

回覆: 2

2013-11-28 4:14 am

請問水濾空氣清新機是否可以融解二手煙?

[匿名]

回覆: 1

2013-12-08 10:06 pm

Chem(hygroscopic)

[匿名]

回覆: 1

2013-12-08 9:24 pm

questions about distillation

Yuki

回覆: 1

2013-12-08 10:03 am

organic chem

小薇

回覆: 3

2013-12-06 3:39 am

有冇生物係唔可以對刺激產生反應？