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lzb7758520(½ð±Ò+3): 2011-05-31 14:17:53
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lzb7758520(½ð±Ò+2): 2011-05-31 14:18:22
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Originally posted by lzb7758520 at 2011-05-30 19:47:27:
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Zn (s) + Cu2+(aq)    =  Zn2+(aq) + Cu (s)
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