How much silver is produced is 15.00 grams of cu is added to the solution of excess silver nitrate?

First write out the balanced equation. 3Cu+2Ag (NO3) 3=2Ag+3Cu (NO3) 2

Then convert copper from grams to moles

15 g*1 mol cu/63.54 g = 15/63.54 mol cu

Then use the mole ratio to convert Moles Cu to Moles Ag

15/63.54 moles Cu * 2 moles Ag/3 moles Cu

The final awnser is (15*2) / (63.54*3) moles Ag = 0.157 moles Ag. If the question wants the answer in grams, convert from moles Ag to grams Ag.

0.157 moles Ag*107.87 g Ag / mol Ag=16.98 g Ag