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Stoichiometry Molar Mass from Gas Volume

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A 4.4 g sample of a gas occupies 2.24 L at STP (273 K and 1 atm). Which gas may it be?

Verified Answer & Explanation⌄

Correct Answer: A) CO₂

Concept Explanation

2.24 L at STP = 0.10 mol. Molar mass = 4.4/0.10 = 44 g mol⁻¹. CO₂ has a molar mass of 44 g mol⁻¹.

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