Use the data presented in Figure 2 as basis for your answer. The TLC plate used is 5 cm by 10 cm. Note that dot A is for the commercial analgesic, dot B is for the aspirin standard, dot C is for the acetaminophen standard, and dot D is for the caffeine standard. What component/s islare present in the commercial analgesic as confirmed on the developed chromatograph?
Q: One microliter of 0.20 μg/mL0.20 μg/mL benzene is injected into a gas chromatograph using splitless…
A:
Q: he following gas-chromatographic data were obtained for individual 2-μL injections of n-hexane in a…
A: solution- n=Number of the Theoretical plates is a dimensionless number . tr=ratio between the…
Q: 5. Here, you can find an example of a paper chromatography experiment. Use the two Chromatograms…
A: Paper chromatography is a analytical Method to separate coloured components. A drop of a mixture…
Q: Which of the following are necessary steps in performing paper chromatography? I. Saturate the…
A: In paper chromatography the necessary conditions are 1. The chamber should be saturated with the…
Q: Question 5
A:
Q: A solution containing 2.30 mM of X (analyte) and 1.15 mM of S (standard) gave peak areas of 1728 and…
A: Given, known Amount of X = 2.30 mM, amount of S = 1.15 mM Peak area of X is 1728 and that of S is…
Q: When using gas chromatography, how is optimum column efficiency obtained? A. When the samples are…
A: Gas chromatography is analytical technique that used in analytical chemistry for separating and…
Q: Internal standard. When 1.06 mmol of 1-pentanol and 1.53 mmol of 1- exanol were separated by gas…
A: Gas chromatography (GC) is an analytical technique used to separate the chemical components of a…
Q: Which of the following could be a consequence of an open and uncovered chromatographic chamber?…
A: TLC is an analytical technique which can be used to monitor the organic reaction transformations.…
Q: When you try separating an unknown mixture by normal-phase liquid chromatography with 50% hexane and…
A: As we know hexane is more less polar than methyl t-butyl ether. That is methyl t-butyl ether is more…
Q: In a reversed phase liquid chromatography separation, what trend in k’ (capacity factor), α…
A:
Q: Consider the following statements as they apply to gas chromatography. Decide if each is true or…
A: 1. Temperature programming is often employed for samples with a wide range of boiling points.…
Q: in detail the measurement procedure for a TL dosimeter.
A:
Q: Shown is a thin-layer chromatography (TLC) plate. In this case, a student decided not to line up the…
A: The R f factor is called retention factor. The expression to find out R f factor in thin layer…
Q: A calibration curve for the determination of aspirin is constructed from known concentration aspirin…
A: In concentration and HPLC peak area curve , concentration is plotted on x-axis and Peak area it…
Q: A scientist wishes to measure the concentration of methyl benzoate in a plant stream by gas…
A: We are given for peak A of methyl benzoate of 1.37 mg/ml gave an area of 301, and peak B of butyl…
Q: 3. Gas Chromatography. Answer the following questions based on what you know about the GC in our…
A: The separation of the individual compounds in a mixture can be best accomplished by using the…
Q: Chromatography
A: Chromatography is a technique used for separation of mixtures. A fluid called as mobile phase is…
Q: Based on the different chromatographic techniques that you have learned, provide a method or…
A: Firstly for dioxin analysis,this involves liquid -liquid extraction method followed by pre…
Q: consequence of an open and uncovered chromatographic chamber? The travel rate of a component…
A: Chromatography is based on the principle where molecules in mixture applied onto the surface or into…
Q: Which liquid chromatography method would you recommend for each c the following sample solution?…
A: For a polymer mixture, Size exclusion chromatography (SEC) can be used. It is a separation technique…
Q: A scientist wishes to measure the concentration of methyl benzoate in a plant stream by gas…
A: Case 1: Methyl benzoate is represented by A and Butyl benzoate is represented by B. Calculation of…
Q: In the Analytical Chemistry laboratory, one of the B.Sc student Ms. Fatma wanted to analyze the…
A: Spectrophotometer
Q: Explain the following terms used in chromatography i) Dead time ii) Number of theoretical plates
A: Several factors contributes towards the separation efficiency of any given column in chromatography…
Q: A mixture of three components is separated using paper chromatography, and each component is…
A: Given: Absorbance of standard solution- Compound A = 0.72 Compound B = 0.55 Compound C = 0.80 For…
Q: A mixture of three components is separated using paper chromatography, and each component is…
A: Given: Absorbance of standard solution- Compound A = 0.72 Compound B = 0.55 Compound C = 0.80 For…
Q: and unchlorinated drinking water. The results ± standa deviation (number of samples) are Sample…
A: Chromatography and spectrophotometry are the two methods used to measure nitrite content in rain…
Q: Is the separation of the mixture shown here a physical orchemical process?
A: To explain whether the method of separation of mixture via column chromatography is physical or…
Q: a) Compounds with low boiling points tend to spend less time in the gaseous state than compounds…
A: The questions are based on the concept of gas chromatography. it is an instrumental technique of…
Q: 1a) Hexane, CH3(CH2)4CH3, is found to have a long retention time when separated from a mixture. A…
A: A) Hexane is a non-polar molecule. It will easily dissolve in the non-polar solvent or have higher…
Q: Define , describe, or illustrate the following: a. HETP b. Capacity factor c.. Selectivity…
A: The HETP is defined as a column length adequate to bring the solute in the mobile phase emitted from…
Q: Aside from TLC and paper chromatography, what are the other types of chromatography. Discuss their…
A: Answer - chromatography - Chromatography is a laboratory technique for the separation of a mixture…
Q: A standard sample contains 15.0 mM of analyte and 25.0 mM of internal standard. The analysis of the…
A: Internal standard method: In analytical chemistry addition of chemical substance to a sample is in…
Q: 6. Explain the instrumentation of super critical fluid chromatography in detail. You can construct a…
A: Super critical fluid chromatography -…
Q: Caffeine, benzoate, and aspartame content of mountain dew soda was determined using reverse phase…
A: Given: Concentration of standard Caffeine used = 0.70 mg/mL Concentration of standard Benzoate used…
Q: A method of quantitative determination of the concentration of constituents of a sample analyzed by…
A: Gas chromatography It is a chromatographic technique used in laboratories in which mixture of…
Q: Suppose you have a 11.4 cm long chromatography column with an inner diameter of 5.47 mm that is…
A: We get answer by using linear flow rate equation
Q: Which of the following statements is false? * O Chromatographic analysis is independent of film…
A:
Q: A solution containing 3.51 mM X (analyte) and 1.67 mM S (internal standard) gave peak areas of 3505…
A: Given : Solution containing 3.51 mM X(analyte) & 1.67 mM S(internal standard) gave…
Q: A new method is proposed to simultaneously detectand separatefour foodadditives by reversed-phase…
A: (a) The mathematical expression for calculating the number of plates is: N=16(tRW)2
Q: A TLC of a mixture of two compounds is developed in a 50:50 hexanes:ethyl acetate solution (original…
A: Given TLC Original TLC = 50 : 50 Hexane : Ethyl acetate New TLC = 25 : 75 Hexane : Ethyl acetate…
Q: For numbers 1-3, refer to TLC plates below, (A,B and C, from left to right) M M M H H K Sample…
A: Given that, the reaction is Hamtori (H) and Kotetsu (K) react to form Matetsu (M),i.e., H + K → M.…
Q: 1. A Urinometer was used to test a patient's urine specimen, it has a current specific gravity…
A:
Q: Categorize each as a determinate or an indeterminate error and further classify determinate errors…
A: A question based on tools in analytical chemistry that is to be accomplished.
Q: [Glucose), mg / mL | Absorbance 0.132 5.000 10.00 20.00 30.00 0.290 0.498 0.642 40.00 0.750 a. Using…
A: a) In the given table, the absorbance data of ferricyanide ion is given on varying the concentration…
Q: ) You perform column chromatography on a sample of clove oil and collect a total of 16 fractions.…
A: The main components of clove oil are eugenol, eugenol acetate and caryophyllene. The structures of…
Q: A mixture of three components is separated using paper chromatography, and each component is…
A: Given: Absorbance of standard solution- Compound A = 0.72 Compound B = 0.55 Compound C = 0.80 For…
Q: Draw a clearly labelled schematic representation of a Gas Chromatography system.
A: Gas chromatography is an important analytical technique used for the separation, identification and…
Q: 12. A standard solution with known concentrations of tartaric acid and fumaric acid was prepared and…
A:
Q: 1- What term refers to the ability to distinguish two peaks from one another in a chromatogram? two…
A: Chromatography is a technique used to seperate components from a mixture. Here we have to answer…
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- There's 1 drink (and you are asked to determine the glucose concentration in the drink in the units of g/100mL. (Why these units? Well, once you have the concentrations in g/100mL you will be able to compare your values with the nutritional values given on the drink bottles’ labels). The sample of the drink was diluted 1/100 (i.e. by a factor of 100). This was an essential step in the method because, without it, the machine used to analyse the glucose concentration (spectrophotometer) would have given an error as the concentration would have been too high for accurate detection. What this means for you is that the dilution factor will need to be taken into consideration in your calculations (remember the aim is to calculate the concentration in the original drink and not in the diluted drink). You measured the concentration of their diluted drink using the spectrophotometer and their results were provided to them in the units mM (millimolar). Glucose Concentration in mM of drink =…There's 1 drink (and you are asked to determine the glucose concentration in the drink in the units of g/100mL. (Why these units? Well, once you have the concentrations in g/100mL you will be able to compare your values with the nutritional values given on the drink bottles’ labels). The sample of the drink was diluted 1/100 (i.e. by a factor of 100). This was an essential step in the method because, without it, the machine used to analyse the glucose concentration (spectrophotometer) would have given an error as the concentration would have been too high for accurate detection. What this means for you is that the dilution factor will need to be taken into consideration in your calculations (remember the aim is to calculate the concentration in the original drink and not in the diluted drink). You measured the concentration of their diluted drink using the spectrophotometer and their results were provided to them in the units mM (millimolar). Glucose Concentration in mM of drink =…125.1 mg of streptomycin sulphate are dissolved in 10 ml of water. A GC headspace analysis is carried out in order to determine the methanol content of the drug. A peak for methanol is produced which has 73.2% of the area of a peak for a methanol standard containing 0.532 mg/100 ml of methanol in water analysed under exactly the same conditions, What is the methanol content of the streptomycin sulphate in ppm and %w/w? Answer: 311.3 ppm, 0.3113 % w/w.how??
- An analysis of city drinking water for total hardness was done by two students in the laboratory and produced the following results (in ppm CaCO3): Student A: 228.3, 226.4, 226.9, 227.1, and 228.6. Student B: 229.5, 226.1, 230.7, 223.8, and 227.5What is the 95% confidence interval for the mean?1. You give your home health patient an unopened 500-mL bottle of guaifenesin and tellthem to take 2 teaspoons 4 times a day as ordered. They ask you how long the bottlewill last. 2. You are shadowing a nurse during a clinical who receives an order to adjust the infusionrate of a pump so that 1.6 mg of lidocaine are being delivered per minute. Hanging is a100 mL piggyback containing 0.4 grams lidocaine, a 0.4% solution. How many mL perhour should the piggyback be set to deliver? How long will the piggyback last? 3. Phenobarbital 180 mg/m 2 /24 hours given every eight hours is ordered for a childwhose BSA (body surface area) is 0.29 m 2 . How many mg will you need if the child willbe on the medication for 10 days? 4. You are going to mix a 1:10 bleach solution with water to make 500 mL of a 1:35 bleachsolution. How much 1:10 bleach solution should you use?(I recommend using the C1V1=C2V2 formula) 5. As a home health nurse you need to help a client make…6. The concentration of caffeine in an energy soft drink was determined by standard addition using HPLC. The following procedure was used: a standard caffeine solution was prepared by adding 0.09850g of caffeine to 25.0 cm3 of water.A series of solutions were prepared by adding known volumes of the standard solution to the soft drink before diluting to 100 cm3. The volume of standard and the caffeine peak area are shown in the table: Energy Drink (cm3) Added caffeine Std (cm3) Peak area 15 0 965 15 5 1352 15 10 1739 15 15 2126 15 20 2513 Determine the concentration of caffeine in the soft drink as mg cm-3. A. 3.3 B. 2.3 C. 4.3 D. 7.3
- The gravimetric factor used to express CoCBr6·H20 in a sample that is finally weighed as PbClBr is choose below: FW PbClBr / 6 x FW CoCBr6·H20 FW CoCBr6·H20 / FW PbClBr FW CoCBr6·H20 / 6 x FW PbClBr 6 x FW PbClBr / FW CoCBr6·H20The concentration of purified OXA-M290 is tested with a BCA assay. Serial dilutions of a bovine serum albumin (BSA) stock solution are prepared, then pipetted into a 96-well plate; each dilution of the BSA standard is tested in triplicate. Then, bicinchoninic acid and Cu2+ ions are added to all of the wells of the plate. After incubating the plate for 1 hour, a microplate reader is used to measure the absorbance of all of the wells in the plate at 560 nm. This generates the following data: BSA conc. (μg/mL), Replicate 1 Absorbance, Replicate 2 Absorbance, Replicate 3 Absorbance 40, 1.360, 1.403, 1.481 20, 0.750, 0.745, 0.810 10, 0.380, 0.344, 0.398 5, 0.198, 0.160, 0.183 2.5, 0.090, 0.100, 0.085 1.25, 0.038, 0.043, 0.051 0.625, 0.024, 0.028, 0.019 Prepare a calibration curve using these data. You can use Excel, R, SPSS or an equivalent graphing software. In this graph, plot absorbance (y-axis) against the concentration of the protein standard (x-axis). Calculate and plot…Downvoted for wrong solution. A river is carrying water containing 2000 mg/l Magnesium Chloride into a small lake. The lake has a naturally occurring Magnesium Chloride of 50 mg/l. If the river flow is 2500 Lmin and the lake flow rate is 1.5 m³.sec¹, what is the concentration of MgCl2 in the lake after the discharge point? Assume that the flows in the river and lake are completely mixed, that the salt is a conservative substance, and the system is at steady state.
- Chemistry The levels of an organic pollutant (P) in the groundwater at the perimeter of a plant were a cause for concern. A 10 mL sample of the water was taken and the pollutant was extracted with 95% efficiency using 25 mL of diethyl ether. GC was used to analyse the concentration of P in diethyl ether. A calibration curve was plotted for a series of standards of P which yielded the following results: Peak Area Toluene Conc. (µg/ml) 12,000 2.6 23,700 5.0 35,500 7.7 46,800 9.9 31,250 Sample Determine the concentration of P in ppb in the initial groundwater sample.What is the difference between Pseudocapacitor and EDLC? Can you please explain what happens in pseudocapacitance and EDLC? Which is better? Can you tell me everything i need to know about them?4. Ksp=4.1x10-36 for Pb3(AsO4)2Calculate Eofor Pb3(AsO4)2(s) + 6e- 3Pb(s) + 2AsO43-Pb2+ +2e- Pb(s) Eo= -0.126 V