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There is 9.2758% Al3+ in a formula unit of aluminum oxide.
AnswerThe formula for aluminum oxide is Al2O3: Molar mass =581.77g/mol Al2O3.In one mole Al2O3, there are two moles of Al3+ ions, therefore 2 moles Al3+ x 26.982g/mol Al3+ = 53.964g Al3+ in one mole of Al2O3.
GIVEN: mass of Al3+ = 53.964 gAl3+;Molar mass of Al2O3 = 581.77 gAl2O3
WANTED: % Al3+
EQUATION:
% Al3+...=...g Al3+x 100...g Al2O3
% Al3+...=...53.964gAl3+x100......=...9.2758%Al3+581.77g Al2O3
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