Answer:The molecular mass of Al₂O₃ (Aluminum Oxide) is 102g/mol.The Aluminum oxide chemical name is Al₂O₃.One mole of Al₂O₃ contains 2 moles of Aluminum atoms and 3 moles of oxygen atoms.The molar mass of Al is experimentally found to be 26.98 u, but for calculation, we often assume the molar mass of Al as 27u.The molar mass of Oxygen is experimentally found to be 15.99 u, but for calculation purposes, we assume the molar mass of O as 16u.Molecular mass of Al₂O₃ = (2×Molar mass of Al) + (3×Molar mass of O) = (2 × 27 + 3 × 16) u = 102g/mol.
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