Chemistry, 29.09.2021 08:30 batmandillon21
Hypothesis: Which plating method did the counterfeiters use to make their coins?
They used ADDITIVE PLATING to create a redox reaction between zinc solid and zinc ions. This
created neutral zinc atoms that were plated onto the copper coins.
They used DISPLACEMENT PLATING to create a redox reaction between neutral copper and zinc ions.
Electrons from copper are transferred to zinc ions, creating copper ions. The copper metal atoms are
then displaced with zinc.
Answers: 2
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8.98 dm3 of hydrogen gas is collected at 38.8 °c. find the volume the gas will occupy at -39.9 °c if the pressure remains constant.
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4.25g sample of solid ammonium nitrate dissolves in 60.0g of water in a coffee-cup calorimeter, the temperature drops from 22.0 c to 16.9 c. assume that the specific heat of the solution is the same as that of pure water. calculate delta(h) (in kj/mol nh4no3) for the solution proces.
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Hypothesis: Which plating method did the counterfeiters use to make their coins?
They used ADDITIV...
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