Chemistry Homework Help

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Electroplating

Q. How many seconds does it take to deposit 41.8 g of Zn on a steel gate when 21.0 A is passed through a ZnSO4 solution?

Solved • Nov 20, 2019

Electroplating

Q. Electrolysis of molten NaCl is a Downs cell is the major isolation step in the production of sodium metal. Assuming that 212 g of Na metal forms, answer the following questions. (c) How many amps will produce this amount in 9.50 h?

Solved • Nov 20, 2019

Electroplating

Q. Electrolysis of molten NaCl is a Downs cell is the major isolation step in the production of sodium metal. Assuming that 212 g of Na metal forms, answer the following questions. (b) How many coulombs are required? Enter your answer in scientific notations.

Solved • Nov 20, 2019

Electroplating

Q. Electrolysis of molten NaCl is a Downs cell is the major isolation step in the production of sodium metal. Assuming that 212 g of Na metal forms, answer the following questions. (a) How many moles of electrons are required?

Solved • Nov 20, 2019

Electroplating

Q. Like any piece of apparatus, an electrolytic cell operates at less than 100% efficiency. A cell depositing Cu from a Cu^2+ bath operates for 10 h with an average current of 5.8 A. If 58.9 g of copper is deposited, at what efficiency is the cell operating?

Solved • Nov 20, 2019

Electroplating

Q. 22. Electrolysis can be a convenient way to remove a metal from a solution of multiple ions. What mass of aluminum metal (26.982 g mol^-1) can be isolated from a solution of Al2O3 using a current of 125 A over a 12 hour period?

Solved • Oct 11, 2019

Electroplating

Q. 21. How long in minutes would it take to electroplate a spoon with 0.50 g of silver (107.87 g mol^-1) at a constant current of 0.22 A using AgNO3?

Solved • Oct 11, 2019