1. The freezing point of pure benzene (C₆H₆) is 5.49 °C. The freezing point of a solution made using toluene (C₇H₈) in benzene is determined to be -13.0 °C. What is the molality of the toluene? (Kf benzene = 5.12 °C/m)

Chemistry: Principles and Reactions
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Author:William L. Masterton, Cecile N. Hurley
Publisher:William L. Masterton, Cecile N. Hurley
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1. The freezing point of pure benzene (C₆H₆) is 5.49 °C. The freezing point of a solution made using toluene (C₇H₈) in benzene is determined to be -13.0 °C. What is the molality of the toluene? (Kf benzene = 5.12 °C/m)

2. Which atom in the H-F bond has a partial positive charge (δ⁺)?

A) H
B) F
C) Both
D) Neither
 
3. List the following atoms in order of increasing size (atomic radius): Se, O, Cl.
A) Cl < O < Se
B) Se < Cl < O
C) O < Se < Cl
D) O < Cl < Se
 
 
 
 
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