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Sindh MDCAT 2022 Chemistry #Combustion Stoichiometry #Stoichiometry

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Q.101 3.0 g of C on combustion gives C + O₂ → CO₂.

Verified Answer & Explanation⌄

Correct Answer: D) 1.505 × 10²³ molecules of CO₂

Concept Explanation

3.0 g C = 3/12 = 0.25 mol C. Complete combustion gives 0.25 mol CO₂ = 0.25N_A = 1.505 × 10²³ molecules.

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