how many moles of oxygen atoms are present in 1 mole of Al2O3
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Solution
1 mole Al2O3 contains 2 moles of Al and 3 moles of O.
Weight of 1 mole of Al2O3 = 102 g
Weight of one mole of oxygen is 16 g and Al is 27 g.
So moles of O are 3 and Al are 2.