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In a quantitative analysis, 0.3 g of an organic compound was found to contain 60 % carbon by mass. Upon complete combustion, the mass of CO ₂ gas produced from this sample is _______ mg . [Given : Molar mass (in g mol ⁻¹ ) C : 12, O : 16 ]

Correct answer

660

Step-by-step solution

Mass of carbon in the organic compound = 60 100 0.3 = 0.18 g Applying the Principle of Atomic Conservation (POAC) on carbon: Moles of carbon in compound = Moles of CO ₂ produced 0.18 12 = Mass of CO ₂ 44 Mass of CO ₂ = 0.18 44 12 = 0.66 g Mass of CO ₂ in mg = 0.66 1000 = 660 mg Answer: 660

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