Use the following problem to:
Outline how to determine the limiting agent.
Determine the excess reactant and how much is left over.
Determine the amount of each of the products produced.
CaSO4 + AuF3 = CaF2 + Au2(SO4)3
Start with 15 grams of each reactant.
You want a procedure for this. Here is an example problem worked in detail that provides each step in the process.
Post your work if you get stuck.
http://www.jiskha.com/science/chemistry/limiting_reagent_problem.html