How many seconds does it take to deposit 0.94 g of Ni on a decorative drawer handle when 14.9 A is passed through a Ni(NO3)2 solution? Molar mass of Ni is 58.69 g/mole. Faraday constant=96485 C/mole. Enter numbers into 1 decimal places.

Time take to deposit Ni is 259.02 sec.

Explanation:

Given:

Current A

Faraday constant

Molar mass of Ni

Mass of Ni g

First find the no. moles in Ni solution,

Moles of Ni

                    mol

From the below reaction,

  ⇆

Above reaction shows "1 mol of requires 2 mol of electron to form 1 mol of "

So for finding charge flow in this reaction we write,

Charge flow C

For finding time of reaction,

Where charge flow

    sec

Therefore, time take to deposit Ni is 259.02 sec.

the solar system used to have much dust particles option no d

the atomic number will stay the same no matter how many electrons it has, so it doesn’t decrease nor increase. it’ll only change with a different number of protons