3CaCO3+2FePO4-->Ca3(PO4)2+Fe2(CO3)3
We start with 100g. of calcium carbonate and 45g. iron (III) phosphate. What is the maximum amount of Ca3(PO4)2 and Fe2(CO3)3 ??
This is a limiting reagent problem. I know that because amounts are given for BOTH reactants. Here is a site that gives a worked example of a limiting reagent problem. Post back here is you have any questions.
http://www.jiskha.com/science/chemistry/limiting_reagent_problem.html