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Problem- Purification of nickel can be achieved by electrorefining nickel from an impure nickel anode onto a pure nickel cathode in an electrolytic cell. How many hours will it take to plate 16.5 kg of nickel onto the cathode if the current passed through the cell is held constant at 43.5 A? Assume the nickel in the electrolytic solution is present as Ni2.
Kindly Please put your best effort to provide the solution of above problem
An excited hydrogen atom emits light with a frequency of 1.141 multiplied by 1014 Hz to reach the energy level for which n = 4. In what principal quantum level did the electron begin?
You are a hazmat responder and walk into what appears to be a meth lab. There are flasks of iodine, White Gas fuel, Sodium Hydroxide, Nitric Acid, and a box of ephidrine.
What is the density of gallium in grams per cubic centimeter at 25 C if a 1.00 cube has a mass of 0.2133.
excess amount of a generic metal hydroxide M(OH)2, is mixed with pure water. The resulting equilibrium solution has a pH of 10.28. What is the Ksp of the salt at 22 °C?
If you have a 750 ml flask that contains 1.235g of C5 H11 NO3 that is heated to 118.5 degrees C what is the pressure inside the flask
What is the concentrations of Ni^2+ when the cell potential falls to 0.45 V? What is the concentration of Zn^2+ when the cell potential falls to 0.45V
How many electrons can be removed from element 69 before it is reduced to its core electron configuration? For the purposes of this question, the core electron configuration is the configuration of the next lightest rare gas atom.
Thiosulfate was used to mask the copper in a 20.00 mL aliquot. Titration of the lead and zinc in this aliquot required 34.06 mL of the EDTA solution.
The average mass of an atom of sulfur is 5.33 X 10-23 g. How many sulfur atoms are present in a 100.0g sample of sulfur
If the copper is drawn into wire whose diameter is 8.20 , how many feet of copper can be obtained from the ingot? The density of copper is 8.94.
An extraction procedure specifies that an aqueous solution containing dissolved organic material be extracted twice with 10-mL portions of diethyl ether.
This liquid is then diluted with water to form liquid .sulfuric acid, H2SO4, as the only product in the reaction. Write a balanced chemical equation for the formation of sulfuric acid from H2S2O7 when diluted with water.
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