For a science experiment you need to electroplate zinc onto both sides of a very thin, 1.00 cm × 1.00 cm copper sheet. You want the zinc thickness to be 140 nm , and you know that the charge carriers in the ionic solution are divalent (charge 2e) zinc ions. The density of zinc is 7140 kg/m3 .
If the electroplating apparatus operates at 1.40 mA , how long will it take the zinc to reach the desired thickness?
Express your answer in seconds to three significant figures.
(7140 kg/m³)(2.00 cm²)((1e-2)² m² / cm²)(140 nm)(1e-9 m /
nm)(1000 g / kg) = 1.9992e-4 g
(1.9992e-4 g)(mol Zn / 65.382 g)(2 mol e- / mol Zn)(96485 C / mol
e-) = 0.5900 C
(0.5900 C)(s / 1.40 mC)(mC / 1e-3 C) = 421 s
For a science experiment you need to electroplate zinc onto both sides of a very thin,...
For a science experiment you need to electroplate zinc onto both sides of a very thin, 1.00 cm × 1.00 cm copper sheet. You want the zinc thickness to be 140 nm , and you know that the charge carriers in the ionic solution are divalent (charge 2e) zinc ions. The density of zinc is 7140 kg/m3 If the electroplating apparatus operates at 1.40 mA , how long will it take the zinc to reach the desired thickness?
For a science experiment you need to electroplate a 120-nm-thick zinc coating onto both sides of a very thin, 2.0 cm × 2.0 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/m3. Part A If the electroplating apparatus operates at 2.0 mA , how long will it take the zinc to reach the desired thickness?
For a science experiment you need to electroplate zinc onto both sides of a very thin, 1.00cm
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