A solution of `Ni(NO_(3))_(2)` is electrolyzed between platium electrodes using a current of `5A` for `20 mi n`. What mass of `Ni` is deposited at the cathode ?

Explanation

To solve the problem of determining the mass of nickel deposited at the cathode during the electrolysis of a solution of Ni(NO₃)₂, we can follow these steps:

### Step 1: Determine the charge (Q) passed through the solution
The charge can be calculated using the formula:
\[ Q = I \times T \]
where:
- \( I \) is the current in amperes (A)
- \( T \) is the time in seconds (s)
...