what is the use of oxyen

2006-10-22 4:02 am
what is the use of oxyen (write in eng 唔好咁長)

回答 (2)

2006-10-22 5:47 am
✔ 最佳答案
For breathing(eg. In hospital)
In rockets and space shuttles(For support the combustion of fuel)
In industry(For cutting and welding metal)
photosynthesis(In plants)
參考: Aristo Chemistry Book
2006-10-22 4:22 am
breathing
help to burning
use oxygen to undergo photosynthesis


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