What was the most important parameter change that lead to the development of modern HPLC? A. Smaller particle sizes for the stationary phase B. Ultra pure solvents for the detectors C. Properly trained glass blowers to create the required glass tubes D. High pressure pumps and tubing for the mobile phase Why do columns for gas chromatography need to be so long? Choose the best answer. A. To overcome the problem of high diffusion due to the high temperatures B. Because it is a thin glass tube C. To prevent stationary phase loss and then contamination of the detector D. To remove neutral contaminants from the background
What was the most important parameter change that lead to the development of modern HPLC? A. Smaller particle sizes for the stationary phase B. Ultra pure solvents for the detectors C. Properly trained glass blowers to create the required glass tubes D. High pressure pumps and tubing for the mobile phase Why do columns for gas chromatography need to be so long? Choose the best answer. A. To overcome the problem of high diffusion due to the high temperatures B. Because it is a thin glass tube C. To prevent stationary phase loss and then contamination of the detector D. To remove neutral contaminants from the background
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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What was the most important parameter change that lead to the development of modern HPLC?
| A. |
Smaller particle sizes for the stationary phase |
|
| B. |
Ultra pure solvents for the detectors |
|
| C. |
Properly trained glass blowers to create the required glass tubes |
|
| D. |
High pressure pumps and tubing for the mobile phase |
Why do columns for gas chromatography need to be so long? Choose the best answer.
| A. |
To overcome the problem of high diffusion due to the high temperatures |
|
| B. |
Because it is a thin glass tube |
|
| C. |
To prevent stationary phase loss and then contamination of the detector |
|
| D. |
To remove neutral contaminants from the background |
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