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1) Galvanized nails are iron nails that have been plated with zinc to prevent rusting. The relevant reaction is
Zn2+(aq)+2e??Zn(s)
For a large batch of nails, a manufacturer needs to plate a total zinc mass of 2.50kg on the surface to get adequate coverage.
How many moles of zinc are in 2.50kg of zinc?

2) The total charge of a mole of electrons is 96,500 coulombs (C) and
1ampere(A)=1coulomb/second(C/s)
Part A) What mass of Cu(s) is electroplated by running 21.0A of current through a Cu2+(aq) solution for 4.00 h?
Part B) How many minutes will it take to electroplate 56.1g of gold by running 5.00 A of current through a solution of Au+(aq)?

3) What mass of gold is produced when 6.90A of current are passed through a gold solution for 10.0min ?

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  • Category:- Chemistry
  • Reference No.:- M9676934

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