How many grams of copper are produced when 9 moles of silver react with copper (II) nitrate

Answer 1

Unfortunately, silver does not replace copper, so this reaction would not take place.

Ag(s) + Cu(NO3)2 ==> no reaction

But if it did, you would do the problem as follows:

2Ag(s) + Cu(NO3)2 ==> 2AgNO3 + Cu(s)

9 moles Ag x 1 mole Cu/2 moles Ag x 63.5 g Cu/mole Cu = 286 g