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發問 2 回答 38

2007-03-26 4:13 am

點解有D物質會有揮發性o既???

2007-03-22 12:41 am

some chemical equation type and mechanism

2007-03-19 6:06 am

2007-03-16 12:05 am

如何消除水中的硝酸鹽?

2007-03-16 2:31 am

2007-03-14 10:53 am

2007-03-14 10:46 am

anti-bumping granule

2007-03-13 3:22 am

[AL CHEM] 用咩方法分辮 Na2CO3 & NaHCO3?

2007-03-13 5:31 am

酸鹼...唔識教教我~係uwants問過冇答到

2007-03-13 5:28 am

2007-03-13 3:24 am

天拿水的成份同化學式是什麼

2007-03-11 11:51 pm

F.4 Chemistry mole ...

2007-03-09 1:46 am

尼龍(勁賞20!)

2007-03-03 5:00 am

2007-03-01 4:05 am

想問chem既野...

2007-02-27 4:04 am

AL chem 一問..

2007-02-26 9:56 pm

diamond (all carbon)

2007-02-26 4:58 am

what is the different between ionic and molecular

2007-02-25 11:05 pm

我想知道抽濕劑的特性

2007-02-25 10:27 pm

打火機里面係咩氣體?

2007-02-25 5:47 am

甚麼是乾冰??

2007-02-25 5:33 am

急.... structural formula...T^T

2007-02-25 2:30 am

i want to ask the chemical formulaes to the following

2007-02-25 5:27 am

什麼因素會影響酸鹼度的值?

2007-02-23 4:42 am

what substance will react with water violently?(40marks)

2007-02-23 5:17 am

organic solvent

2007-02-22 11:13 pm

tetrachloromethane

2007-02-22 10:45 pm

2007-02-21 7:31 pm

2007-02-15 4:26 am

Fe+concentrated sulpuric acid

2007-02-15 11:58 pm

2007-02-15 5:10 am

2007-02-13 5:45 am

CHEM（急！２０分）

2007-02-12 2:14 am

化學疑難!!!唔該幫幫我解答!!

2007-02-11 8:39 pm

ａｃｉｄ　和　ａｋａｌｉｓ

2007-02-04 1:04 am

A-Level chem- ionisation energy and electrons

2007-02-04 1:06 am

A-Level chem- bonding and melting temperature

2007-02-03 6:12 am

各種ACID ALKALI的簡寫!!

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