3. The addition of 5 grams of a compound to 750 g of CC14 lowered the freezing point of the solvent by 10.5K. Calculate the molar mass of the compound. Here is a table that can be found at the back of our reference by Atkins. Table 2.3 Standard enthalpies of fusion and vaporization at the transition temperature, A"k) mol) Fusion T/K Vaperization Vaporiation Fusion co, Cs, Elementa 217.0 K33 1946 25.2) 1234 I130 2436 250.6 161.2 4.39 319.4 26.74 Ar 83.81 L188 87.29 6.506 273.15 6.008 373.15 40656 Br, 2659 10.57 3324 29.45 44.016 at 298 K CI, 172.1 6.41 HS L87.6 2.377 212.8 I8.67 239.1 20.41 53.6 0.26 5.0 3.16 H50, 283.5 2.56 H, 13.96 20.38 0916 NH, 195.4 5.652 239.7 23.35 He 3.5 0.021 4.22 0.084 Organic compounds CH, Hg 24.3 2.292 629.7 59.30 0.941 111.7 3868 15.52 458.4 41.80

3. The addition of 5 grams of a compound to 750 g of CC14 lowered the freezing point of the solvent by 10.5K. Calculate the molar mass of the compound. Here is a table that can be found at the back of our reference by Atkins. Table 2.3 Standard enthalpies of fusion and vaporization at the transition temperature, A"k) mol) Fusion T/K Vaperization Vaporiation Fusion co, Cs, Elementa 217.0 K33 1946 25.2) 1234 I130 2436 250.6 161.2 4.39 319.4 26.74 Ar 83.81 L188 87.29 6.506 273.15 6.008 373.15 40656 Br, 2659 10.57 3324 29.45 44.016 at 298 K CI, 172.1 6.41 HS L87.6 2.377 212.8 I8.67 239.1 20.41 53.6 0.26 5.0 3.16 H50, 283.5 2.56 H, 13.96 20.38 0916 NH, 195.4 5.652 239.7 23.35 He 3.5 0.021 4.22 0.084 Organic compounds CH, Hg 24.3 2.292 629.7 59.30 0.941 111.7 3868 15.52 458.4 41.80

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter17: Spontaneity, Entropy, And Free Energy

Section: Chapter Questions

Problem 128IP: Some nonelectrolyte solute (molar mass = 142 g/mol) was dissolved in 150. mL of a solvent (density =...

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