Which of the following range of concentration is correct for semi-micro analysis?
Correct answer: B. 10 - 100 mg
- A. 10 - 1000 mg
- B. 10 - 100 mg
- C. 1 - 10 mg
- D. 20 - 1000 mg
Explanation
Semi-micro analysis is the category of chemical analysis that deals with sample sizes that are smaller than macro analysis but larger than microanalysis. The typical range for a semi-micro sample is between 10 and 100 milligrams.
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Analytical chemistry identifies and measures substances using separation and instrumental methods. Chromatography is studied through stationary and mobile phases, retention and Rf values, while spectroscopy connects absorption of electromagnetic radiation with molecular structure and supports qualitative and quantitative analysis through techniques such as UV-visible and infrared spectroscopy.
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