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- Why is it important to select immiscible solvents when performing liquid-liquid extraction? In general, how can you determine which layer (aqueous or organic) is on top, and which is on the bottom?Of the two principal polymers used in column chromatography and electrophoresis, which one would be most immune to contamination by bacteria and other organisms?If 3.8% (w/v) of sucrose is needed in the media, how much of sucrose is required to prepare the stated volume of media: a) 1000 mL b) 250 mL
- Which would move faster in thin layer chromatography?a) Beeswaxb) Phosphatidylinositolc) Cholesterold) SteroidThe Cavity Ring-Down Spectroscopy (CRDS) technique offers greater sensitivity compared to other conventional spectroscopy techniques. Explain the underlying mechanism of this.what does it mean if a pigment (let' say 'yellow') traveled beyond the solvent front in paper chromatography?
- Biochemical oxygen demand (BOD) is a measure of the: Question 4 options: A) number of bacteria present in a water sample B) amount of oxygen present in a water sample C) amount of organic matter present in a water sample D) amount of undissolved solid matter present in a water sampleWhat is the driving force behind paper chromatography?Explain the mechanism of denaturation for each agent: 1. Heavy metals 2. Organic solvents 3. Heat 4. Acids 5. Salts