what is the answer of Q28
Ethene is denser or less dense than air ?
Methane is denser or less dense than air ?
chem paper 2 04 Q28 Ethene
2007-05-02 3:05 am
回答 (2)
2007-05-02 4:28 am
✔ 最佳答案
Ethene 係同air差唔多咁dense，所以唔可以用upwards delivery黎收集；Methane 係less dense than air ，不過通常會用collesting under water黎收集methane&Ethene ，因為Methane&Ethene is insoluble in water
參考: 自己
2007-05-02 3:08 am
B it is less dense
2007-05-01 19:13:11 補充：
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2007-05-01 19:13:11 補充：
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參考: gv me
收錄日期: 2021-05-02 13:48:32
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