1. whisky 係 mixture定係compound??
2. 我本書話oxygen係最abundant in air ,唔係nitrogen咩??
3. what would be observe when sodium is added in to water.
第三題用英文答plx, 一,二唔一定..thx
收錄日期: 2021-04-13 15:09:18
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080216000051KK00929