Wednesday
April 1, 2015

Homework Help: Chemistry

Posted by Josh on Thursday, August 23, 2007 at 9:29pm.

I have a problem that has been driving me crazy trying to solve, and I was wondering if someone could help. The problem is this: "Given the reaction: CuSO4 + 4 NH3 ----> Cu(NH3)4SO4, if 10 grams of CuSO4 reacts with 30 grams of NH3, what is the theoretical yield of Cu(NH3)4SO4, what is the limiting reactant, how many grams of the excess reactant is left over, and if the actual yield is 12.6 grams, what is the percent yield?" I don't know if it's hard or not, but I keep getting stuck after finding the theoretical yield (176.24?). Could someone help?
(Also, I'm finding the theoretical yield by adding up the atomic masses of CuSO4 + 4 NH3. Is this where I am possibly screwing up?)

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