0.05 cm thick coating of silver is deposited on a plate of 0.05 m2 area. The number of silver atoms β JEE Mains Chemistry Past Papers Chemistry Question
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 _____ Γ 1023. (At mass Ag = 108, d = 7.9 g cm-3)
Answer: .
π‘ Solution & Explanation
Volume of silver coating = 0.05 Γ 0.05 Γ 10000 = 25 cm3 Mass of silver deposited = 25 Γ 7.9 g Moles of silver atoms = 25 7.9 ο΄ Number of silver atoms = 25 7.9 6.023 10 ο΄ ο΄ ο΄ = 11.01 Γ 1023 Ans. 11
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