Debra Brown
New member
For a science experiment you need to electroplate zinc onto both sides of a very thin, 1.00 cm x 1.00 cm copper sheet. You want the zinc thickness to be 140nm, and you know that the charge carriers in the ionic solution are divalent (charge 2e) zinc ions. The density of zinc is 7140kg/m^3 . If the electroplating apparatus operates at 1.40mA , how long will it take the zinc to reach the desired thickness?