solvent front origin

Q: In a thin layer chromatography (TLC) experiment, solute A traveled 20 mm while solute B traveled 30…

A: Here we are required to find which solute has greater affinity for silica gel.

Q: Indicate the proper sequence of steps required to prepare a buret for use in this experiment. It may…

A: The steps of the preparation given are,

Q: NaOH buret 2nd reading 29,45 32.05 NaOH buret 1st reading 0,02 mL 0.01 mL Slighty derker pinh Light…

A: Formula used : RSD = s ×100x¯ where, RSD = Relative Standard Deviations = Standard Deviation x¯=…

Q: This method of purification is applied when the purity has a lower vapor pressure than the purified…

A: the process in which a substance directly goes from solid state to gaseous state without going…

Q: For manufacturing 1 litter of Acid free shampoo for bike or car washing, which textile dye i should…

A: When it comes to coloring agents or dyes for formulations, there are several factors to consider…

Q: How much ppm will replace 200kg/ha of Ca++? * a.) 100 b.) 40 c.) 20 d.) 0.2

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

A:

Q: Organic solids are best purified by a. recrystallization b. vacuum distillation c. fractional…

A: Purification of organic compounds can be done by various methods namely distillation method,…

Q: 3. The following mineral analysis was reported for a water sample taken from a local NJ well.…

A:

Q: Compound A Compound B Compound C Rf Student 1 Rf Student 2 Rf Student 3 0.20 0.21 0.15 0.50 0.52…

A: Retardation or retention factor (Rf) value is the ratio of distance traveled by the analyte to that…

Q: 15 μL of a 1mg/mL bovine serum albumin standard (BSA) were added to 3 mL of Bradford reagent. How…

A: Volume of bovine serum albumin standard (BSA) added =  15 μLConcentration of the BSA standard…

Q: What situations would result in recollection or rejection of urine specimen? Determine…

A: Answer - Urine specimen - Catheterized specimen urine culture is a laboratory test that looks for…

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: 2. Consider the following example GC Chromatogram from a publication about aggression among…

A: A total of 22 CHCs were recorded by GC-MS analysis in the chemical profile of the ants. The most…

Q: During the lab procedure a filtered pipette was used to measure out 1.0 mL of the saturated…

A: A question based on analytical separation. Separation of saturated organic solution using cotton is…

Q: 1 10 O O TRS MKR SRH 4. Junghwan wanted to determine which of the following skin care product which…

A: Paper chromatography is used to separate different chemical compounds based on their different…

Q: Question 2 A mixture of cyclohexane (b.p 81 °C) and toluene (b.p 110.8 °C) need to be separated and…

A: Given that, a mixture of cyclohexane (b.p 81 °C) and toluene (b.p 110.8 °C) needs to be separated…

Q: Weigh out 5g of table salt. Dissolve it in 50mL of distilled water in a container using a stirrer…

A: Given information is as follows: The mass of table salt = 5 g The volume of distilled water = 50 mL…

Q: What are pipeline slurry systems? How do they function?

A: Slurry is a mixture of solid in a molten state. It is denser than liquid and is mobile. The…

Q: A food sample with a moisture content of 13.70% is found to contain 36.18% crude protein. What would…

A: A numerical problem based on percentage composition, which is to be accomplished.

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

A: We have to tell whether the bold words/phrases are true or not. If they are not true, then we have…

Q: Concentration (grams/kg H₂O) 1000 23. 900 800 700 600 500 400 300 200 100 0 Solubility Curve for…

A: We have to answer the following questions from the given temperature dependent solubility curve.

Q: Poly(benzylglutamate), PBLG, is a common polymer (in our lab, anyway!). Its partial specific volume…

A: Given that  Specific volume is = 0.791ml/g  PBLG= 0.p3925g DMF = 0.12823g

Q: Please help me calculate this: I have a protein sample that has the concentration of 0.30835 µg/ml.…

A: 1 milliliter is equal to 1000 microliters. In the question given that , initial concentration of a…

Q: What is the full form of ppm ? For what purpose it is used.

A: The term ppm can be described as the types of the mass related units that would be used to determine…

Q: If the original gravity is 1.03 and final gravity is 0.96, calculate the percent alcohol content…

A: Alcohol by volume percent = (original gravity-final gravity)/0.00753

Q: Calculate the volume of standard protein stock and diluent (dHO) needed to make each of the five…

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Q: A certain amount of 'solvent A' will dissolve 32 grams of acetaminophen (Tylenol) at room…

A: Since you have asked multiple questions, we will answer the first question. If you want any specific…

Q: A 1 mL sample of glycogen was calculated to contain 21 µmol (micromole) glucose. To 1 mL of this…

A: This question is from basic mole concept .

Q: 3. Take another 10mL of the temporary hard water and boil for 5 minutes mL of soap solution to the…

A: The given water is temporary hard water sample. Temporary hardness in water is due to dissolved…

Q: A 1 mL sample of glycogen was calculated to contain 35 µmol (micromole) glucose. To 1 mL of this…

A: Given, Volume of sample of glycogen = 1 mL Moles of glucose = 35 micromole HCl volume = 2mL…

Q: How many milligrams of piroxicam is required to make 5 solid ounces of 1:270 (w/w) piroxicam gel?

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Q: Based on the chromatogram, the Gingko capsule contains quercetin and kaempferol only, True or False?

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

Q: Complete the table:…

A: Molisch’s test: It is the chemical test used to check for the presence of carbohydrates in a given…

Q: True or false. 1. In an immunoassay for drugs of abuse, any concentration greater than 0 is…

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Q: What physical property determines which solvent sinks to the bottom when performing a liquid-liquid…

A: A separating funnel is used for carrying out liquid liquid extractions. When two liquids are shaken…

Q: Consider the following molecules. Which statement(s) is TRUE? CH3 CH3 но ČH3 но ČD3 i. You could…

A: Introduction: Separation is the process of differentiating two or more compounds or elements. There…

Q: Question 1. a) You think that you have isolated a substance A in the lab. It melts at 75 – 77C.…

A: Melting point of a compound is the temperature at which its liquid state and vapour state are in…

Photochemistry

Photochemistry is the part of chemistry that studies the various mechanisms of reactions that are triggered by the presence of light energy. It also helps to study the changes involved in a molecule that can undergo the absorption of radiation.