So I just recently started properly reading and studying into the science subjects, and up now is Chemistry. I am using Zumdahl's book as my crutch. I am somewhat confused on the issue of limiting reagents (under Stoichiometry) and was wondering if anyone could make it clearer. I googled it, and sites like Wikipedia made me somehow more confused.
http://en.wikipedia.org/wiki/Limiting_reagent
In the first example, why does it feel to me like a given was missing? And in the second example, where did we get the 157.9g from? Much thanks for the help.