(a) Calculate the mass of Ag deposited at cathode when a current of 2 amperes was passed through a solution of `AgNO_(3)` for 15 minutes
(Given : Molar mass of `Ag = 108 g mol^(-1) 1F = 96500 C mol^(-1)`)
(b) Define fuel cell

Explanation

### Solution:

**(a) Calculate the mass of Ag deposited at cathode when a current of 2 amperes was passed through a solution of AgNO₃ for 15 minutes.**

1. **Identify the given values:**
- Current (I) = 2 A
- Time (t) = 15 minutes = 15 × 60 seconds = 900 seconds
- Molar mass of Ag = 108 g/mol
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