posted by Anonymous .
Calculate the mass of copper needed to displace 5.0g of silver from silver nitrate solution.
(Relative atomic masses:Ag=108,Cu=63.5)
I got it to be 3.175g needed.
I can't get 3.175 g. Please post your work. Also, please clarify if the 5.0 is 5.0 g Ag or 5.0 g AgNO3.