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How many moles of O^2- ions are in 0.55 mol of Al2O3? What is the mass in grams of the O^2- ions?
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How many moles of O^2- ions are in 0.55 mol of Al2O3? What is the mass in grams of the O^2- ions?

User MacInnis
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Answer:

Step-by-step explanation:

The formula for aluminum oxide is Al2O3, which means that, if aluminium oxide is ionically bonded, every formula mass of aluminum oxide contains three O2- ions. In this instance, .0350 formula masses of aluminum oxide would contains, 0.350 mole Al2O3 (3 mole O2-/1mole) = 3*0.350 = 1.05 Hence 1.05 moles of O2-. If aluminum oxide were covalently bonded, it would not contain any O2- ions.

User Himmators
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