Given the following data for Mass of test tube and stearic acid = 14.17 g Mass of test tube = 11.40 g Freezing point of strearic acid = 69.59o C Mass of weighing paper + naphthalene =1.230 g Mass of weighing paper = 0.920 g Freezing point solution = 64.00o C Kf = 4.5o C/m Determine the following 1. mass of stearic acid in g (2 decimal places); 2.77g 2. mass of naphthalene in g (2 decimal places); 0.31g 3. freezing point depression (2 decimal places); 3.93oC 4. molality of solution (3 significant figures); _____ 5. moles of naphthalene (3 significant figures); _____ 6. molar mass of naphthalene, experimentally (3 significant figures); _____ 7. % error if theoretical molar mass of naphthalene is 128.17 g/ mole, USE ABSOLUTE VALUE (3 significant figure); _____
Given the following data for Mass of test tube and stearic acid = 14.17 g Mass of test tube = 11.40 g Freezing point of strearic acid = 69.59o C Mass of weighing paper + naphthalene =1.230 g Mass of weighing paper = 0.920 g Freezing point solution = 64.00o C Kf = 4.5o C/m Determine the following 1. mass of stearic acid in g (2 decimal places); 2.77g 2. mass of naphthalene in g (2 decimal places); 0.31g 3. freezing point depression (2 decimal places); 3.93oC 4. molality of solution (3 significant figures); _____ 5. moles of naphthalene (3 significant figures); _____ 6. molar mass of naphthalene, experimentally (3 significant figures); _____ 7. % error if theoretical molar mass of naphthalene is 128.17 g/ mole, USE ABSOLUTE VALUE (3 significant figure); _____
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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Given the following data for
Mass of test tube and stearic acid = 14.17 g
Mass of test tube = 11.40 g
Freezing point of strearic acid = 69.59o C
Mass of weighing paper + naphthalene =1.230 g
Mass of weighing paper = 0.920 g
Freezing point solution = 64.00o C
Kf = 4.5o C/m
Determine the following
1. mass of stearic acid in g (2 decimal places); 2.77g
2. mass of naphthalene in g (2 decimal places); 0.31g
3. freezing point depression (2 decimal places); 3.93oC
4. molality of solution (3 significant figures); _____
5. moles of naphthalene (3 significant figures); _____
6. molar mass of naphthalene, experimentally (3 significant figures); _____
7. % error if theoretical molar mass of naphthalene is 128.17 g/ mole, USE ABSOLUTE VALUE (3 significant figure); _____
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