Help with Chemistry Pleassseeee!!!!?

Question

What is the percent yield of PBI_2 if 5.00 grams of PBI_2 results from a solution containing 10.g of PB(C_2H_3O_2)_2 with a solution containing an excess of KI?

Answer 1

theoretical amount of product=10g lead acetate/ mw lead acetate x mw lead iodide

take the result of this formula as the denominator and divide 5.00 grams product/theoretical x 100%