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## Homework Statement

For a science experiment you need to electroplate a 130 nm thick zinc coating onto both sides of a very thin, 3.0 cm*3.0 cm copper sheet. You know that the charge carriers in the ionic solution are divalent (charge 2e) zinc ions. The density of zinc is 7140 kg/m^3

If the electroplating apparatus operates at 1.3 mA, how long will it take the zinc to reach the desired thickness?

## Homework Equations

not sure

## The Attempt at a Solution

I have no idea how to solve this problem