JEE Main 2024 Chemistry question
0.05 cm thick coating of silver is deposited on a plate of 0.05 m² area. The number of silver atoms deposited on plate are × 10²³. (At mass Ag = 108, d = 7.9 g cm⁻³)
Answer: 11
Solution
Volume of the coating = 0.05 × 10⁴ cm² × 0.05 cm = 25 cm³, so the mass = 7.9 × 25 = 197.5
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