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¤ôÃè
Username: 20013001

Registered: 04-2003
Posted on Sunday, March 28, 2004 - 11:13 pm:   
Does Zinc form an impermable oxide layer when it is heated strongly with air?
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Chio U Kim
Username: cuk

Registered: 04-2003
Posted on Saturday, April 03, 2004 - 08:00 am:   
It is not required in certificate-level syllabus. However, you may take a internet search to find out the answer.

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