Percentage Yield?

Question

I missed the lesson, i just need to know what do after finding the limiting reactant/reagent.

Answer 1

Once you know the limiting reagent, you can calculate the theoretical yield. The theoretical yield is calculated from the amount of the limiting reagent that you have given. To calculate the percent yield, take the actual (experimental) yield and divide it by the theoretical from above and then multiply by 100 to obtain the percent of yield.
Formula % yield = (actual x 100) / theoretical