Mathematics: 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 19.0 kg of nickel onto the cathode if the current passed through the cell is held constant at 34.5 A

Purification of nickel can be achieved by electrorefining

Ответ:

marahsenno

20.01.2022

Mathematics

$\approx 503hrs$

Step-by-step explanation:

Let W_t be weight of plated nickel and E_m be grams per mole of nickel

Also take Faraday's constant , F=96485.33 ,

Nickel has an atomic weight, E_m of 58.69g per mole

Therefore, time to plate W_t is given by the formula

$W_t=\frac{E_m}{2F}\timesI\times t$

$(19\times 1000)=\frac{58.69}{2\times96485.33} \times 34.5 \times t\\t=\frac{19000\times96485.33\times 2}{58.69\times34.5}\\t=1810763.278sec\\t=502.9898hrs$

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Ответ:

mercedes73

26.06.2020

Mathematics

Step-by-step explanation:

The point is reflected over the x-axis so we just need to look at the y-value.

The distance between the two points will be twice the y-value.

|3.5 * 2| = 7

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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 19.0 kg of nickel onto the cathode if the current passed through the cell is held constant at 34.5 A

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