What is an emulsion? What should you do if an emulsion occurs?

Q: The ___________ color test is used to locate and characterize seminal stains.

A: The seminal stain has a yellowish-grey hue and resembles the shape of a counter map as seen with the…

Q: If you are extracting a substance from water into ether, is it more effective to do one extraction…

A:

Q: Which of the following is the best option for transferring 20 mL of a solution? A Use a 10 mL Mohr…

A: Correct option C

Q: What is the importance of paper chromotography?  What is the usage of paper chromotography in the…

A: Paper chromatography is a chromatography technique that is used for separating colored pigments…

Q: 18. For an extraction to be successful, the organic layer should be immiscible or miscible with the…

A: In extraction process, organic and aqueous solutions are thoroughly mixed with solute and is allowed…

Q: When we look at the retention times of the capsaicin and dihydrocapsaicin, they are about a half…

A: The chemical species with higher retention time has greater attraction with the stationary phase…

Q: Although we use pre-cast gels in this lab it is common practice to make your own polyacrylamide gels…

A: Note : Since you have posted multiple questions, we are entitled to answer the first only. Please…

Q: What is chiral chromatography?

A:

Q: Describe how to obtain a Retention Factor. What does the retention factor tell you?

A: Retention factor of a material is the ratio of the distance the spot moved above the origin to the…

Q: Given a disinfectant concentration dosage of 1.6 mg/L, estimate the retention time that you would…

A: The disinfectant concentration dosage of 1.6 mg/l Chlorine is used as a disinfectant. The…

Q: What is the relative retention of the two solute?

A: relative retention of the two solute

Q: Which properties should a solvent have to be suitable for recrystallization? (Check all that apply)…

A: Recrystallization is a process which is use to purify the 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: 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: How would you make 500.0 mL of a version of Coomassie Blue stain for gels? Its composition is the…

A: We need to prepare 500 mL of a version of Coomassie Blue stain for gels, The (w/v%) for Coomassie…

Q: 25. In the paper chromatography experiment on food dyes, salt water was used as the A. mobile phase…

A: Paper chromatography is a method used to separate colored substances or chemicals.

Q: Which of these could not be used in an extraction with water? Explain why you chose these…

A:

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: Indicate the effect (increases, decreases, or stays the same) that each of the following changes…

A: A question based on analytical separations that is to be accomplished.

Q: How does the analyzed vinegar sample conform with the FDA standards?

A: According to the Food and Drug Administration(FDA) standards, the minimum amount of acidity that a…

Q: Determination of the ppm Fe in a water sample using the iron-phenanthroline method. Presence of…

A: Given: Determination of the true concentration ppm (Fe) in a water sample using Iron-phenanthroline…

Q: B. QUALITATIVE ANALYSIS OF ORGANIC COMPOUNDS Results:(+) or(-) Element Test Name Principal Reagent…

A:

Q: How is the retention factor calculated for a specific spot when doing the TLC analysis? O Distance…

A: We have to tell the process of calculating of retention factor for a particular spot. The definition…

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: 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: 7. Draw the structure of ethyl acetate and propyl acetate. Which substance is 6 expected to have the…

A: Introduction: Chromatography is a technique used to separate the mixture of solution. There are two…

Q: Write 3 ways that can be used to get rid of emulsion.

A:

Q: Many ink dyes can be separated by the technique of___________ chromatography

A: Thin Layer Chromatography is a method for separating non-volatile substances. The separation…

Q: Liquid extraction What can you do if you don't know which layer is which in an extraction procedure?…

A: Extraction is a fundamental technique used to isolate one compound from a mixture. A liquid/liquid…

Q: A student ran a TLC plate using a 90:10 water:isopropyl alcohol developer and this was the outcome.…

A:

Q: Write the Separation of heavy metals using solvent extraction technique.

A: Solvent extraction is an analytical method in which metals are separated based on their solubility…

Q: 4. You are developing a GC method to separate xylene isomers (xylenes are benzene rings with two…

A: GC

Q: Which of the following is the best option for transferring 20 mL of a solution? A Use a 5mL…

A: The transfer of liquids and solution uses various types of apparatus and instruments depending on…

Q: Diagram of Paper Chromatogram: Marker Dyes Draw all spots that appear on the chromatogram, and mark…

A: First observe the solvent front. It could be nearly 11 cm as per your picture of paper and ruler.…

Q: What is the approximate retention time of benzoate?

A: To approximate the retention time of benzoate from the plots.

Q: From the experiment in Question 1, the following data were obtained: 2. Distance traveled by spot O…

A:

Q: A spot of black ink was placed on a strip of fiter paper. The chromatogram was developed using an…

A: Chromatography is based on the principle that two substances are dissolved in the same solvent but…

Q: Image attached

A: In TLC, there are 2 phases used, i.e., mobile phase and stationary phase. Thin layer chromatography…

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: Write TRUE if the BOLD word/phrase makes the statement correct. Otherwise, write the correct…

A: Chromatography is a technique used to seperate the mixture into individual components and to…

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: how does the intermolecular force of attraction lead to stain removal? state reference

A: Intermolecular forces are the type of forces operating in between the atoms or ions of different…

Q: permanent emulsions

A: Before knowing about permanent emulsion you should know about Emulsion and emulsifier Emulsion is a…

Q: How do you prepare an emulsion?

A: Emulsion is a mixture of two or more liquids which are immiscible with each other , emulsions…

Q: 1. You need to make 125ml of Polyacrylamide (solid) to make the gel at different percentages. Show a…

A: Given: volume of polyacrylamide=125 mL1%=1 g100 mL

Micelles and Biological Membrane

Micelles are the type of lipid molecules that organize themselves in spherical shape in aqueous solutions. The production of the micelle is a reply to the amphipathic behavior of fatty acids. It means that they consist of both hydrophobic regions and hydrophilic regions. In micelles, polar head groups (hydrophilic groups) produce an outer layer associated with water whereas nonpolar tails (hydrophobic groups) are organized in the interior.