Q: What is an emulsion? What should you do if an emulsion occurs?
A: The term mixture can be defined as the substance which is formed by the combination of two or more…
Q: A student ran a TLC plate using a 90:10 hexane:ethyl acetate developer and this was the outcome. How…
A: Given that , A student ran a TLC plate with 90:10 of n-hexane : Ethyl acetate.
Q: What if there is no stability in the emulsion?
A: The emulsion is a mixture that generally contains 2 immiscible liquids.
Q: What is chiral chromatography?
A:
Q: What are the applications of hplc?
A: High Performance liquid chromatography (HPLC) also known as High pressure liquid chromatography, is…
Q: To prepare a 13x dilution of a bacterial culture in a final volume of 38ml, how much of the original…
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Q: One of the following techniques cannot be used for separation ounodwom Select one: O a.…
A: Answer - The correct option is (b) boiling point determination. The boiling point of a compound,…
Q: List five factors that affect the retention time.
A: Retention time is a measure of the time taken for a solute to pass through a chromatography column.…
Q: The solvent level in the development chamber should be above the level of the spotted compounds on…
A: The solvent level in the development chamber should be above the level of the spotted compounds on…
Q: Which of the following is the best option for transferring 20 mL of a solution? A Use a 5ml…
A: Since you have posted multiple questions, we are entitled to answer the first only.
Q: 14. If an ink is made by mixing dyes 1,2 and 3, which chromatogram will be produced from the ink?…
A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…
Q: Your lab-mate observes a large amount of streaking and blurring of their samples when they visualize…
A: It is the major problem that YTLC plate seems to be blurred in the UV light. But you can overcome…
Q: Which is not a drying agent? anhydride CaCl2 sodium bicarbonate sodium sulfate none • all
A: Drying agent are those which absorbs moisture from air.
Q: What if there is no stability in the emulsion? • How does an emulsion work? • How do you prepare…
A: An emulsion is a mixture of two immiscible liquids. They are colloids. For example, oil and water…
Q: You have a 10 mg/ml stock solution of ethidium bromide (EtBr) and need to dilute it to 0.2…
A:
Q: Two compounds in gas chromatography has relative retention of 1.1 on a column with a plate height of…
A: The chromatography technique is used to separate the two or more substances from a mixture which are…
Q: 4. For over-the-counter preparations, inactive ingredients are called fillers. Are these the…
A: We have find out the answer.
Q: What was the drying agent used after the organic layer was separated? Group of answer choices MgSO4…
A: To remove traces of water from an organic solution, drying agents are required. It's used in a…
Q: 10. If an eluent of too high polarity is used for the development of a TLC plate, will the sample…
A: The TLC plate have the stationary phase Silica and Mobile phase which is solvent . Solvent may be…
Q: Fill in the blanks: is applied when TLC will be used to isolate compounds. It uses a plate.
A: Thin layer chromatography is a technique used to isolate non volatile mixtures.
Q: emulsion in the initial (jar) test?
A: In this question we have to explain that which of the emulsifiers produced the most stable emulsion…
Q: what are possible sources of error in a soap making experiment? (non-human error) I want clear…
A: Soap making experiment involves the process of saponification in which the reaction of triglycerides…
Q: An unknown sample of nail polish remover contains a mixture of acetone and ethyl acetate. If the…
A: Retention time (RT) is a measure of the time taken for a solute to pass through a chromatography…
Q: 2.3 In an experiment the essential oils from herbs, were extracted with water. Explain how you will…
A: Answer - Liquid-liquid extraction - Liquid–liquid extraction, also known as solvent extraction and…
Q: What are the two types of membrane usually employed for western blotting?
A: The two types of Membrane employed for western blotting are:- (1) nitrocellulose (2) PVDF…
Q: To make a w/o emulsion you will need a surfactant with low HLB value; e.g., 6. Select one: O True O…
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Q: Write 3 ways that can be used to get rid of emulsion.
A:
Q: Among the three solvents used in the separation of pigments in spinach, which produced the most…
A: Given that : We have to determine among the three solvents given below, which of the solvent…
Q: Why is sodium chloride added before extraction the aqueous layer with DCM? How does magnesium…
A: DCM refers to dichloromethane and the molecular formula CH2Cl2 is used as a solvent that is…
Q: How many milligrams of piroxicam is required to make 5 solid ounces of 1:270 (w/w) piroxicam gel?
A:
Q: HO and ?
A: Alcohol can be defined as an organic compound in which carbon atom is attached to hydroxyl group.
Q: . What is the difference between temporary and permanent hardness?
A: Difference between temporary and permanent hardness :
Q: What will be the appearance of a TLC plate if a solvent of too low polarity is used for the…
A: In TLC, stationery phase is used is polar in nature. components or analyte that has to seperate, has…
Q: Chemistry Two unknown compounds A and B with the chemical structures below are separated on a…
A: Chromatography is the technique which is used to do the separation of components from the…
Q: how to know if my product was pure usiing a TLC plate that has reaction mixture, co spot, and…
A: Thin layer Chromatography is also known as TLC which is a very useful tool to check a reaction is…
Q: if you wanted to makes the spots travel up the TLC plate further, what solvent ration would you…
A: You know that ethyl acetate is a polar solvent while hexane is a non-polar solvent.
Q: Your HRP sample had a concentration of 2.0 mg/mL and you added 10 uL to a tube containing 10 uL of…
A: Concentration of HRP sample = 2.0 mg/mL
Q: Image attached
A: In TLC, there are 2 phases used, i.e., mobile phase and stationary phase. Thin layer chromatography…
Q: You have 100 mL of solvent available to do an extraction. Which will give a better separation? O A.…
A:
Q: Which might you need to do a ninhydrin stain to visualize spots in TLC?
A: The solutions used in TLC to detect whether a reaction is taking place or not might not have colour…
Q: what is the types of creaming of emulsions
A: In emulsion, the rise of dispersed particles to the surface of an emulsion is known as creaming.…
Q: Your lab uses a UHPLC method for quantifying the active ingredient of Tylenol. The method is based…
A: a) Formula for calculating number of plates (N) in a column is N=5.54 (retention time/width at half…
Q: What happens if the spots are made too small when preparing a TLC plate for development?
A:
Q: 7. The following is a gas chromatogram for a sample containing compounds B, and C. area A = 75 area…
A: In gas chromatography, the individual compounds of a mixture are separated by the variation in the…
Q: You have 100 mL of solvent available to do an extraction. Which will give a better separation? a. 1…
A: The solvent extraction is more effective when the extraction is repeated with small amounts of…
Q: Identification of spots on the TLC plate is done by all of the following EXCEPT O Spraying with…
A: TLC is thin layer chromatography used to know the components in mixture and generally used to check…
Q: 1. Which property of compounds is responsible for the separation in a TLC? Explain with an example.…
A: Please find your solution below : 1. Thin layer chromatography is a technique used to separate the…
Q: How do you prepare an emulsion?
A: Emulsion is a mixture of two or more liquids which are immiscible with each other , emulsions…
What mixture yield permanent emulsions?
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