Question

The balanced chemical equation for the reaction of copper (Cu) and silver nitrate (AgNO3) is shown below. Cu + 2AgNO3 2Ag + Cu(NO3)2 How many moles of copper must react to form 0.854 mol Ag?

Answer 1

1 mol Cu - 2 mol Ag
x             - 0.854 mol Ag

x=0.854*1/2=0.427 

0.427 mol Cu

Answer 2

Hope this helps you.