Posted by Canzadia on Thursday, March 25, 2010 at 10:22pm.
You must first determine the theoretical yield. That is a regular stoichiometry problem.
Write and balance the equation, convert 400 g copper(II) perchlorate to moles, then convert moles of the perchlorate to moles of the product(Cu). Finally, convert moles of copper to grams. grams = moles x molar mass. This is the theoretical yield.
%yield = (actual yield/theoretical yield)*100 = ??
The actual yield is given in the problem as 89.0 grams Cu.
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