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posted by kelly Sunday, October 10, 2010 at 1:05pm.

what is the experimental percent of sulfate in alum?

There are several alums; the one most people mean when they speak of "alum" is potassium aluminum sulfate with the formula of KAl(SO4)2.12H2O %sulfate = (molar mass SO4/molar mass KAl(SO4)2.12H2O)*100 = ??

That sounds about right...

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