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KMU MDCAT 2024 Chemistry #Stoichiometric Calculations #Stoichiometry

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What mass of aluminium oxide (Al₂O₃) is produced from 18.5g of Al metal, when it reacts completely with oxygen gas according to the following equation? 4Al(s) + 3O₂(g) → 2Al₂O₃(s) (KMU MDCAT 2024)

Verified Answer & Explanation⌄

Correct Answer: C) 34.9g

Concept Explanation

Using 4Al + 3O₂ → 2Al₂O₃ and the given aluminium mass gives about 34.9 g Al₂O₃.

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