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Galvanized nails are iron nails that have been plated with zinc to prevent rusting. The relevant reaction is Learning Goal: To relate current, time, charge, and mass for electroplating Zn2+(aq) + 2e-→Zn(s) calculations. For a large batch of nails, a manufacturer needs to plate a total zinc mass of 2.80 kg on the surface to get adequate coverage. Electroplating is a form of electrolysis in which a metal is deposited on the surface of another metal. To quantify electrolysis, use the following relationships. Part A Electric current is measured in amperes (A), which expresses the amount of charge, in coulombs (C), that flows per second (s): 1A = 1 C/s How many moles of zinc are in 2.80 kg of zinc? Express your answer to three significant figures and include the appropriate units. Another unit of charge is the faraday (F), which is equal to a mole of electrons and is related to charge in coulombs as follows: 42.8 mol 1F = 1 mol e = 96, 500 C Submit Previous Answers Correct Part B How many coulombs of charge are needed to produce 42.8 mol of solid zinc? Express your answer to three significant figures and include the appropriate units. ? Value Units Submit Request Answer

Galvanized nails are iron nails that have been plated with zinc to prevent rusting. The relevant reaction is Learning Goal: To relate current, time, charge, and mass for electroplating Zn2+(aq) + 2e-→Zn(s) calculations. For a large batch of nails, a manufacturer needs to plate a total zinc mass of 2.80 kg on the surface to get adequate coverage. Electroplating is a form of electrolysis in which a metal is deposited on the surface of another metal. To quantify electrolysis, use the following relationships. Part A Electric current is measured in amperes (A), which expresses the amount of charge, in coulombs (C), that flows per second (s): 1A = 1 C/s How many moles of zinc are in 2.80 kg of zinc? Express your answer to three significant figures and include the appropriate units. Another unit of charge is the faraday (F), which is equal to a mole of electrons and is related to charge in coulombs as follows: 42.8 mol 1F = 1 mol e = 96, 500 C Submit Previous Answers Correct Part B How many coulombs of charge are needed to produce 42.8 mol of solid zinc? Express your answer to three significant figures and include the appropriate units. ? Value Units Submit Request Answer

Principles of Modern Chemistry
Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter17: Electrochemistry
Section: Chapter Questions
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Galvanized nails are iron nails that have been plated with zinc to prevent rusting. The relevant reaction is Learning Goal: To relate current, time, charge, and mass for electroplating calculations. n²+(aq) + 2e¯→Zn(s) For a large batch of nails, a manufacturer needs to plate a total zinc mass of 2.80 kg on the surface to get adequate coverage. Electroplating is a form of electrolysis in which a metal is deposited on the surface of another metal. To quantify electrolysis, use the following relationships. Part A Electric current is measured in amperes (A), which expresses the amount of charge, in coulombs (C), that flows per second (s): 1 A = 1 C/s How many moles of zinc are in 2.80 kg of zinc? Express your answer to three significant figures and include the appropriate units. Another unit of charge is the faraday (F), which is equal to a mole of electrons and is related to charge in coulombs as follows: 42.8 mol 1F = 1 mol e¯ = 96, 500 ( Submit Previous Answers Correct Part B How many coulombs of charge are needed to produce 42.8 mol of solid zinc? Express your answer to three significant figures and include the appropriate units. HA ? Value Units Submit Request Answer
Transcribed Image Text:Galvanized nails are iron nails that have been plated with zinc to prevent rusting. The relevant reaction is Learning Goal: To relate current, time, charge, and mass for electroplating calculations. n²+(aq) + 2e¯→Zn(s) For a large batch of nails, a manufacturer needs to plate a total zinc mass of 2.80 kg on the surface to get adequate coverage. Electroplating is a form of electrolysis in which a metal is deposited on the surface of another metal. To quantify electrolysis, use the following relationships. Part A Electric current is measured in amperes (A), which expresses the amount of charge, in coulombs (C), that flows per second (s): 1 A = 1 C/s How many moles of zinc are in 2.80 kg of zinc? Express your answer to three significant figures and include the appropriate units. Another unit of charge is the faraday (F), which is equal to a mole of electrons and is related to charge in coulombs as follows: 42.8 mol 1F = 1 mol e¯ = 96, 500 ( Submit Previous Answers Correct Part B How many coulombs of charge are needed to produce 42.8 mol of solid zinc? Express your answer to three significant figures and include the appropriate units. HA ? Value Units Submit Request Answer
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