Naproxen (C14H1403) is a commercially important anti-inflammatory agent that can be isolated from the thyroid gland. A solution of 1.837 g of naproxen in 27.0 g of benzene (C6H6) is prepared at 20°C. The density of benzene at this temperature is 0.8787 g/mL. Assume that naproxen remains intact upon dissolution and the density of the solution equals the density of pure benzene. Use the following data: MM naproxen= 230 g/mol ; MM benzene= 78 g/mol; R=0.08206 L-atm/ mol-K; For benzene : kb= 2.53°C kg/mol ; kf= 5.12°C kg/mol; Boiling point= 80.1°C; Freezing point= 5.5°C 1. What is the molality of the solution? A. 0.30 m C. 0.24 m B. 0.28 m D. 0.20 m 2. What is the boiling point of the solution? A. 80.71°C C. 80.81°C B. 80.86°C D. 80.1°C 3. What is the freezing point of the solution? A. 4.48°C C. 4.27°C B. 4.07°C D. 3.96°C

Naproxen (C14H1403) is a commercially important anti-inflammatory agent that can be isolated from the thyroid gland. A solution of 1.837 g of naproxen in 27.0 g of benzene (C6H6) is prepared at 20°C. The density of benzene at this temperature is 0.8787 g/mL. Assume that naproxen remains intact upon dissolution and the density of the solution equals the density of pure benzene. Use the following data: MM naproxen= 230 g/mol ; MM benzene= 78 g/mol; R=0.08206 L-atm/ mol-K; For benzene : kb= 2.53°C kg/mol ; kf= 5.12°C kg/mol; Boiling point= 80.1°C; Freezing point= 5.5°C 1. What is the molality of the solution? A. 0.30 m C. 0.24 m B. 0.28 m D. 0.20 m 2. What is the boiling point of the solution? A. 80.71°C C. 80.81°C B. 80.86°C D. 80.1°C 3. What is the freezing point of the solution? A. 4.48°C C. 4.27°C B. 4.07°C D. 3.96°C

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

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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