62. A 0.25g of a certain substance is dissolved in 60g of water. The freezing point of the solution is - 0.050 °C. Knowing that the substance has a van't Hoff factor of 1 and is non-volatile, what is the molar mass of the substance? (Freezing point depression of water =- 1.86 °C/m) A. 0.00016 g/mol В. 156.25 g/mol C. 186.54 g/mol D. 1.86 g/mol 63. What is the osmotic pressure (at 20 °C) of a solution made by dissolving 139 of sucrose in 117g of water? The total A. 7.31 atm B. 0.30 atm C. 342 atm D. 0.08 atm 64. A solution contains 3.869 of magnesium chloride and 250g of water. Compute for the freezing point depression of the solution. (Kr water: 1.86 *C/m) А. 0.16 "С B. 0.25 °C C. 0.25 °C D. -0.90 °C

62. A 0.25g of a certain substance is dissolved in 60g of water. The freezing point of the solution is - 0.050 °C. Knowing that the substance has a van't Hoff factor of 1 and is non-volatile, what is the molar mass of the substance? (Freezing point depression of water =- 1.86 °C/m) A. 0.00016 g/mol В. 156.25 g/mol C. 186.54 g/mol D. 1.86 g/mol 63. What is the osmotic pressure (at 20 °C) of a solution made by dissolving 139 of sucrose in 117g of water? The total A. 7.31 atm B. 0.30 atm C. 342 atm D. 0.08 atm 64. A solution contains 3.869 of magnesium chloride and 250g of water. Compute for the freezing point depression of the solution. (Kr water: 1.86 *C/m) А. 0.16 "С B. 0.25 °C C. 0.25 °C D. -0.90 °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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USE GRESA
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