A 5.22-g sample of a compound is dissolved in 200.0 g of benzene. The freezing point of this solution is 1.08°C below that of pure benzene. What is the molar mass of this compound? (Note: K_f for benzene = 5.12°C/m.) A) 1.24 × 10² g/mol B) 2.82 × 10¹ g/mol C) 1.82 × 10² g/mol D) 4.95 × 10³ g/mol E) 5.51 × 10² g/mol

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Explanation:ΔT_f = K_fm1.08°C = 5.12°C/m * mm = 0.211 mM = 5.22 g / 0.211 mol = 24.7 g/mol

A 522-G Sample of a Compound Is Dissolved in 200