Question

how many moles of Al atoms are needed to combine with 1.58 moles of O atoms to make aluminium oxide , Al2O3?
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Answer 1

Answer:

Explanation

2Al₂+3O₂—〉2Al₂O₃

2 moles of Al₂  combine with 3 moles of O₂

x moles of Al₂  combine with 1.58 moles of O₂

x =(2 × 1.58)/3

x = 2.16/3

x = 0.72 moles