If 1.0g of hyoscyamine was dissolved in 200mL of water, how much hyoscyamine would be left remaining in the aqueous solution after extracting once with 100mL of diethyl ether? How much hyoscyamine would be left remaining in the aqueous solution if two extractions with 50mL of diethyl ether were performed instead? Which extraction method would be more efficient at removing hyoscyamine from the aqueous solution? The partition coefficient, K, of hyoscyamine in this system is 4.07.

Q: Using the information below, calculate the percentage w/V of lidocaine (MM (234-34 g/mol) in…

A:

Q: Write an equation for the rapid reaction (call this reaction 1) that occurs when aspirin (an acid)…

A: Aspirin dissolves slightly in cold water to produce sodium salt, whereas it highly dissolves in hot…

Q: How we can prepare or manufacture or formulate a shampoo used in bike or car washing, please write…

A: The scientific mechanism of action of shampoo involves the surfactants present in the shampoo.…

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: If you have 6.76 g of caffeine dissolved in 57.2 mL of water and the extraction coefficient between…

A: Extraction is a technique by which a compound dissolved in a solvent is extracted into another…

Q: One litre of aqueous sample containing the organic pollutant, polychlorinated biphenyl (PCB), was…

A: A one litre sample of polychlorinated biphenyl sample is extracted with two times each time with 50…

Q: You are given a 1:1 (by weight) solid mixture of vitamin C and vitamin A, and you are going to use…

A: A 1:1 solid mixture of vitamin C and Vitamin A is to be separated from one another by liquid-liquid…

Q: 1,8-Cineole is a predominant terpene found in cranberries. The concentration of 1,8-cineole in…

A: Concentration of 1,8 cineole is calculated as given below.

Q: Ex. 2 The concentration of glucose in the cerebrospinal fluid (CSF) is usually 60-75% of the…

A: Plasma glucose concentration = 81 mg/dL Glucose concentration in CSF = 540 ppm. It is desired to…

Q: 2. A prescription balance has a sensitivity requirement of 5 mg. Using this balance, how would you…

A: Sensitivity Requirement = 5 mg  Error = ±5%  Amount of drug needed = 12 mg  So we have to find…

Q: If you have 6.68 g of caffeine dissolved in 66.64 mL of water and the extraction coefficient between…

A:

Q: The relative peak areas and retention for a mixture of five fatty acids separated by GC is given in…

A: Which Fatty Acid has the highest percentage? = FA 1

Q: Which of the following statements is written incorrectly?     Benzophenone (1.0 g) was dissolved…

A: Incorrect statement:

Q: At what pH range(s) will the two compounds be >90% in different layers?

A: find PH range

Q: Determination of Sterols in Dried Mushrooms Find the balanced equation: Saponification: 10 mg or…

A: The give data is used for determination of sterols in dried mushrooms by saponification and…

Q: Using chemical structures, illustrate the differences in weak intermolecular interactions that would…

A:

Q: Calculate the concentration of atmospheric carbon compounds in ppbv using the data in the table…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: What are the analyses or instruments that are used to verify or confirm if the extracted substance…

A: Caffeine is a naturally occurring molecule found in various plants worldwide, and found in beverages…

Q: If we start with 5.2 g of Benzoic acid, calculate the minimum amount of acid to fully protonate…

A: Protonate of Benzoate  to Benzoic Acid Addition of  a proton (H⁺) to the benzoate ion, so the…

Q: What would the growth curve if you grew E. coli at 5% dissolved 02 in solution? Explain your…

A: Answer -

Q: A 50.0 mL juice extract is colorimetrically assayed using Nelson's test. One milliliter (1.00 mL) of…

A: Given: 50 mL of original juice is used. 1 mL of the original solution is used to give absorbance of…

Q: 2) What’s the principle of extraction and recrystallization ? 2) What’s the best method to separate…

A: Given:Principles of extraction and recrystallizationIdentify the best method to separate compounds.A…

Q: What would the gc chromatogram look like when 6.65 g NaBr, 3.78 g NaCl, 7.5 mL of DI water and 5 mL…

A: When NaBr,NaCl and 1-butanol are added together, the halides Reacted with butanol.…

Q: A semi-purified crude extract(SP) was tested against five known phenolic compounds, namely: (1)…

A: To answer questions related to the given chromatogram.

Q: 0.155 g of Acyclovir cream was mixed with 50 mL of 0.5M Sulphuric acid and extracted with 50 mL of…

A: To determine the concentration of Acyclovir in a cream sample, a detailed analytical procedure was…

Q: Test Test Compounds Reagents Visible Result Coupling Aniline B-naphthol in NaOH solution and 5 mL of…

A:

Q: Strength powder contains acetaminophen, aspinn and caffeine as the active in nts. Oketa bel a TLC…

A:

Q: Look up the structures and melting points for acetanilide and salicylic acid. Predict whether the…

A:

Q: Please define the term distribution coefficient, Kd?   2) How the value of Kd indicates the…

A:

Q: You want to make a solution of loading dye with a final concentration of 0.35% bromophenol blue,…

A: Part 1 0.35 % Bromophenol blue = 0.35% * 60 ml = 0.21 ml = 0.21 grams   0.15 % Xylene Cyanol = 0.15%…

Q: 5. What criterion is used for the purity of a sample of caffeine?

A: Solution - The criterion that is used for the purity of sample of caffeine is the value of boiling…

Q: If we are extracting 7 mg of caffeine using 8 ml dichloromethane . Does it make a difference using…

A: The question is based on the concept of solvent extraction. it is an experimental technique of…

Q: why is benzoic acid insoluble in pure water but soluble in NaOH solution

A: Benzoic acid is insoluble in pure water due to its hydrophobic (water-repelling) nature. The…

Q: Why does p-nitroacetanilide recrystilise in ethanol but o-acetanilide remains in the filter

A: Recrystalization of p-nitroacetanilide and O-acetanilide by using ethanol. p-nitroacetanilide can be…

Q: 7. Suppose you have an organic sample X that is contaminated with an impurity. When you wash with an…

A: Answer - According to the question - Given - organic compont is X that contain impurity consider for…

Q: The following chromatogram was the output of the analysis of phytosterols in plants by gas…

A: The answer is as follows:

Q: what compound would contaminate your product if you forgot to add sodium sulfate before running your…

A: The acid catalyzed dehydration of secondary (or tertiary) alcohol follows E1 mechanism. This is…

Q: 1. A vial containing an unknown sample is suspected to be one of the following compounds (mp.): urea…

A: A vial consists of an unknown organic compounds which can be urea, 2,4-dimethylacetanilide,…

Q: What is the approximate amount (mL) of 95% ethyl alcohol that will be required to dissolve the…

A: Given: Solubility of sulfanilamide in ethanol is: 14 mg at 0 0C 24mg at 20 0C 46mg at 40 0C 88mg at…

Q: How to prepare Tyramine in the lab? Write the procedure of the experiment step by step.

A:

Q: Suggest two chemical explanations ( not user error) why the recovery yield of phenacetin from…

A: