Saqibul C. answered 02/24/21
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Cu + 2AgNO3 = Cu(NO3)2 + 2Ag
1 mole of Cu produces 2 moles of Ag. So, 2.28 moles of Cu produces (2.28 * 2) = 4.56 moles of Ag
molar mass of Ag = 107.868 g/mol
mass of Ag = moles * molar mass = 4.56 * 107.868 = 491.878 g