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15 September, 19:36

How many moles of o2 - ions are there in 0.350 moles of aluminum oxide, al2o3?

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  1. 15 September, 23:33
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    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.
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