posted by Katie .
Calcium carbonate reacts with phosphoric acid to produce calcium phosphate, carbon dioxide, and water.
3 CaCO3(s) + 2 H3PO4(aq) Ca3(PO4)2(aq) + 3 CO2(g) + 3 H2O(l)
How many grams of phosphoric acid react with excess calcium carbonate to produce 3.47 g Ca3(PO4)2?
Here is a worked example of a stoichiometry problem similar to yours. Just follow the steps.