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KMU MDCAT 2024 Chemistry #Percentage Yield #Stoichiometry

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When 4 g of magnesium was heated in excess of oxygen. Calculate the theoretical yield of magnesium oxide (MgO). (KMU MDCAT 2024)

Verified Answer & Explanation⌄

Correct Answer: D) 6.6g

Concept Explanation

4 g Mg is about 1/6 mol. The same moles of MgO form, giving about (1/6) × 40 = 6.6 g MgO.

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