In another day John has to measure the molar mass of a biological sample. Because the sample is not stalble at high or low temperatures, he decides to use osmosis to do the measurement. He adds different amount of the sample in 100 g of water against the other side of the osmometer pure water at room temperature 298.15 K. The pressure difference is measured and listed below. What is the molar mass of the sample? MW = ______ kg/mol. 3 sig. fig. Gas constant R =8.3145 J/K. Copy and paste in Excel to treat and fit the data. Final unit in kg/mol not in g/mol. Mass added in 100 g of water (g) CB (kg/m3) or (g/L) ΔP (Pa) 0 0 0 0.0100 0.1 44.0 0.0200 0.2 124.3 0.0300 0.3 241.4 0.0400 0.4 404.6 0.0500 0.5 606.6 0.0600 0.6 842.3 0.0700 0.7 1123.1
In another day John has to measure the molar mass of a biological sample. Because the sample is not stalble at high or low temperatures, he decides to use osmosis to do the measurement. He adds different amount of the sample in 100 g of water against the other side of the osmometer pure water at room temperature 298.15 K. The pressure difference is measured and listed below. What is the molar mass of the sample? MW = ______ kg/mol. 3 sig. fig. Gas constant R =8.3145 J/K. Copy and paste in Excel to treat and fit the data. Final unit in kg/mol not in g/mol. Mass added in 100 g of water (g) CB (kg/m3) or (g/L) ΔP (Pa) 0 0 0 0.0100 0.1 44.0 0.0200 0.2 124.3 0.0300 0.3 241.4 0.0400 0.4 404.6 0.0500 0.5 606.6 0.0600 0.6 842.3 0.0700 0.7 1123.1
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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In another day John has to measure the molar mass of a biological sample. Because the sample is not stalble at high or low temperatures, he decides to use osmosis to do the measurement.
He adds different amount of the sample in 100 g of water against the other side of the osmometer pure water at room temperature 298.15 K. The pressure difference is measured and listed below.
What is the molar mass of the sample? MW = ______ kg/mol. 3 sig. fig. Gas constant R =8.3145 J/K. Copy and paste in Excel to treat and fit the data. Final unit in kg/mol not in g/mol.
| Mass added in 100 g of water (g) | CB (kg/m3) or (g/L) | ΔP (Pa) |
|
0 |
0 | 0 |
|
0.0100 |
0.1 | 44.0 |
| 0.0200 | 0.2 | 124.3 |
| 0.0300 | 0.3 | 241.4 |
| 0.0400 | 0.4 | 404.6 |
| 0.0500 | 0.5 | 606.6 |
| 0.0600 | 0.6 | 842.3 |
| 0.0700 | 0.7 | 1123.1 |
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