ChemistryChemical combinationWAEC
When the equation aAl + bO₂ → cAl₂O₃ is balanced, a, b and c are
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Answer: B. 4, 3, 2
4Al + 3O₂ → 2Al₂O₃ has 4 Al and 6 O atoms on each side.
An AdmitMe practice question, written for the WAEC syllabus. Not an official past question.