Posted by Lisa on Sunday, April 3, 2011 at 7:22pm.
As the problem notes this is a limiting reagent problem. I work these by solving two simple stoichiometry problems (simple meaning the two problems are not limiting.) Solve the first problem using one of the reactants, the second problem using the other reactant and you end up with two answers for the moles of H2O produced. The correct answer in limiting reagent problems is ALWAYS the smaller value and the reagent producing that value is the limiting reagent. Here is an example of how to solve simple stoichiometry problems.
http://www.jiskha.com/science/chemistry/stoichiometry.html
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