▪ In a blood alcohol analysis by GC-FID, methanol elutes at 1 min, ethanol at 2 min, IPA at 3 min, and IS at 4 min. In the patient sample, the analyte elutes t 2 min and the IS at 8 min. What is the relative retention time and the analyte in the patient? ■ A) methanol ▪ B) Ethanol B C) IPA

▪ In a blood alcohol analysis by GC-FID, methanol elutes at 1 min, ethanol at 2 min, IPA at 3 min, and IS at 4 min. In the patient sample, the analyte elutes t 2 min and the IS at 8 min. What is the relative retention time and the analyte in the patient? ■ A) methanol ▪ B) Ethanol B C) IPA

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter31: Introduction To Analytical Separations

Section: Chapter Questions

Problem 31.5QAP

See similar textbooks

Related questions

Q: You have a mixture of 100 proteins with molecular weights between 30 and 45 kDa. All proteins in the…

Q: 1) Find the pH of a mixture of 0.115 M HBr and 0.125 M HCHO₂ (formic acid).

Q: ind the percent yield of bromobenzene,this reaction reacts bromine with benzene and requires the use…

A: The given chemical change is Benzene + Br2 (reagent, in excess)→FeBr3 (catalyst) Bromobenzene…

Q: d)Cyclohexane forms chair conformations by a ring-flip which results of an exchange between axial…

A: 1,3- diaxial interactions increases energy of the system and decreases the stability of particular…

Q: ? + {H → 15 ← Oci 8 GT 8 15N+?

Q: QUESTION 2 a) Determine the degree of unsaturation of the following compounds: i. C15H30N16Br10…

A: Since you have asked multiple question, as per our company guidelines we are supposed to answer…

Q: HCI (excess)

Q: One fine spring day, my favorite student Percy was in my office with a problem that needed solving.…

Q: 3: In the second part of the experiment, a solution containing 1.60x10-³ M Fe³+ and 4.00x10-4 M SCN…

A: Plot the calibration curve using the data in given table. Initial concentration of SCN- in the…

Q: Draw the Lewis structure of the missing reactant. Make sure to include lone pairs and non-zero…

Q: Determine products A to C from the following reactions X V B ( 1) Hy CO Ac)2 / H₂O 2) Na BH4 Excess…

Q: Which of the following IR frequencies would be expected for p-aminobenzoic acid? Select all that…

Q: Draw the Lewis structure of the missing product. Make sure to include lone pairs and non-zero formal…

A: Bronsted-Lowry acid-base theory: The Bronsted-Lowry acid-base theory states that the acid is a…

Q: 4. Roughly calculate the weight of each of the three complexes, [COCI(NH3)5]Cl2, [CO(ONO)(NH3)5]Cl2…

A: Molarity of a solution is defined as the no. of moles of solute present in one litre of solution.…

Q: O 40 50 Transmittance [%] 60 70 80 90 100

A: Answer. First we will find the major peaks from the given IR spectra. 2987 cm-1 medium sharp (alkane…

Q: Rank the following substances in order in increasing intermolecular forces: a. CH3F b. CH3NH2 c.…

Q: Calculate the pH of pure water at 40ºC, given that Kw is 2.92 x 10-14 at 40ºC.

Q: A solution with a total volume of 1000.0 mL contains 37.1 g Mg(NO3)2. If you remove 20.0 mL of this…

A: Weight of Mg(NO3)2 = 37.1 g in 1000 mL. 20.0 mL of this solution is diluted to 500 mL. We have to…

Q: QUESTION 10 What is the solubility (g/L) of barium fluoride, BaF2, in water?

Q: Which of the following IR frequencies would be expected for benzaldehyde? Select all that apply.…

Q: What would the hydroxide ion concentration be if the hydrogen ion concentration was 1 x 10-3 M?

Q: Match the descriptions to the structures. OH OH ABA AHA ACA OH AIA H₂N less acidic substituted…

Q: Draw the skeletal (line-bond) structure of 5- bromo-4,4-dimethylpent-2-yne.

A: Here, we have to draw the skeletal structure of 5-bromo-4,4-dimethylpent-2-yne.

Q: What volume (in mL) of 12.0 M H2SO4 is needed to contain 32.14g H2SO4? Show the solutions

Q: 2-chloro-5-nitrobenzoic You wanted to produce acid. For that purpose, you started the reaction with…

Q: A certain catalyzed reaction is known to have an activation energy E= 74.0 kJ/mol. Furthermore, the…

A: •Since you have posted multiple questions so we are answering first question for remaining question…

Q: 15.0 L of an ideal gas at 298.0 K and 3.36 bar are heated to 350.0 K with a new pressure of 4.40…

Q: b) Rank the following molecules according to their acidity. Justify your answer. OH NO₂ O OH CH3…

Q: 3. Write the half-reaction for oxygen and the half-reaction for hydrogen in the redox reaction…

A: The balanced redox reaction is: 2H2O(l) → 2H2(g) + O2(g)(l)

Q: Complete and balance the equations according to acid and base behavior in water. Phases are…

A: Given reactions are : 1. HNO3 (aq) + H2O (l) --------> ? 2. Ba(OH)2 (s) + H2O (l) -------->…

Q: 1-at atmospheric pressure a sample of Ne gas gas a volume of 155mL at 32C degrees. What volume in…

A: Ideal gas Equation: PV=nRT P= pressure V= Volume R= ideal gas constant T= temperature n= number…

Q: Which of the following bonds are nonpolar? Choose all that apply Choices: O=O double bond C=O…

Q: A chemical reaction takes place in a container of cross-sectional area 50.0 cm². As a result of the…

Q: Given 8.00 g of HBr calculate the volume (mL) of a 48.0% (w/w) solution. (MW HBr: 80.9119 g/mol,…

Q: Some experts says that km can be calculated by saying Vmax from date divided by 2 and then they find…

A: We can calculate the approximate value of Km both from the graph and by solving the MM equation.

Q: 5. NO₂ Total # of Valence Electrons: Lewis Structure (show all resonance structures if applicable)…

A: We have to draw the Lewis structures for the given two molecules and fill the given tables

Q: Using the data in the table, calculate the rate constant of this reaction. k = A+B → C+D Trial [A]…

Q: Which liquid would have the highest boiling point? a. Ch3-OH b. CH3-O-CH3 c. CH3-Ch3

A: Boiling point is a temperature at which pressure exerted by surrounding on liquid is equal to…

Q: Which of the following IR frequencies would be expected for ethyl acetate? Select all that apply.…

Q: A 0.750 M solution of ethanol (molar mass = 46.0 g/mole) has density 0.900 g/mL. What is is its…

Q: Potassium chloride has a solubility of 43 g of KCl in 100 g of H₂O at 50 °C.Determine if each of the…

Q: The law of volumes (using a balloon and boiled water) experiment

Q: a. On the diagram below, make sure to label any partial or full charges that would be present. b. In…

A: Unequal sharing of electrons comes from a covalent link between two atoms with different…

Q: Water has a pKa of 15.7. Methane has a pKa of 48. Hydrofluoric acid has a pKa of 3.2. Acetic acid…

Q: do both with mechanisn

Q: Where did the 14 come from in the equation, poh=14-ph?

A: An explanation about the equation poh=14-ph is shown in the next step.

Q: 7. 8. Provide the complete mechanism using Curved Arrow Formalism for the reaction of the molecule…

A: The answer is as follows: The following reaction is referred as electrophilic substitution of…

Q: True or false: 2,2-dimethylpropane is a structural isomer of n-pentane

A: Given statement: 2,2-dimethylpropane is a structural isomer of n-pentane. We have to find whether…

Q: b)2-chloro-2-methylbutane mainly undergoes SN1 reaction with CH,OH at 25°C. Show the mechanism of…

Q: Problem 1. Redox reactions save lives! Airbags in automobiles are inflated with nitrogen gas…

Question

▪ In a blood alcohol analysis by GC-FID, methanol elutes at 1 min, ethanol at 2 min,
IPA at 3 min, and IS at 4 min. In the patient sample, the analyte elutes t 2 min and
the IS at 8 min. What is the relative retention time and the analyte in the patient?
A) methanol
B) Ethanol chu
C) IPA

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3

VIEW

Step by step

Solved in 3 steps with 3 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.

Similar questions

25 ml of pickled brine was taken from an apple pickled with vinegar and diluted to 500 ml, 25 ml of this was taken and acidity was determined with 0.2 N (Factor: 1.05) NaOH. In the main trials, 6.3 ml - 6.5 ml - 6.9 ml, respectively, 0.1 ml base was used in the analysis without using the sample.For example, how many ppm is its acidity?
An unretained solute is eluted from a GC column in 1.80 min. Decane (C10H22) is eluted in 15.63 min and undecan (C11H24) is eluted in 17.22 min. What is the retention time (report to 2 decimal places, in minutes) of a compound whose retention index is 1050?
From a 10-mL sample, a 1-mL aliquot was taken and diluted to 100mL. From this, a 5-mL aliquot was taken and diluted to 20mL.The final 20mL was found to have a concentration of 0.004M analyte X.What is the concentration of analyte X in the 10-mL sample?
Method used was Volhard Method Sample preparation: 5ml sample diluted in 100 ml. 20ml aliquot was used for analysis. Concentration of AgNO3: 0.0609M Calculate mass of NaCl and % NaCl (w/v)
An unknown sample of nail polish remover contains a mixture of acetone and ethyl acetate. If the mixture is subjected to gas chromatography, which compound would have a longer retention time? Acetone Ethyl acetate Acetone and ethyl acetate would have the same retention time Cannot be determined
Qno1: why there is a need of chromatography and chromatography thecniqs. B) when and where we should use normal and reverse phase chromatography
Metal ions chelate polar groups of analyte molecules for longer retention time. Does this affect chromatogram of RPHPLC?
Describe how to obtain a Retention Factor. What does the retention factor tell you?
You are given 2 ml of a stock solution of phenol red at a concentration of 258 mg/ml and 20 ml of 0.5 potassium phosphate buffer pH 7. You need 100 ml of a solution containing 50 mM potassium phosphate buffer pH 7 and 87 ug/ml phenol red to do a spectrophotometric analysis. How would you make this new solution?
In a reverse-phase separation, a solute was found to have a retention time of 19.6 min, while an unretained peak had a retention time of 1.45 min when the mobile phase was 20/80 v/v% methanol/water. (b) Calculate the k’ for the solute. (c) Calculate the new k’ if the mobile phase is changed to 60/40 methanol/water assuming identical void volume. (d) Calculate a solvent composition that would bring k’ from initial value to a value of 1.20 using tetrahydrofuran/water mobile phase rather than 20/80 v/v % methanol/water.
3c. A solution containing 2.50 mM X (analyte) and 1.20 mM S (standard) gave peak areas of 2509 and 7132 respectively, in a chromatographic analysis. Then, 1.00 mL of 6.00 mM S was added to 5.00 mL of unknown X and the mixture was diluted to 10.0 mL. This solution gave peak areas of 4016 and 3138 for X and S, respectively. Calculate i. the response factor for the analyte ii. the concentration of S (mM) in the 10.0 mL of mixed solutioniii. the concentration of X (mM) in the 10.0 mL of mixed solutioniv. the concentration of X in the original unknown solution
A chromatography experiment in which a mixture of two components, Y (k' =1.4) and Z (k' = 3.8) are injected into a column. The retention time (tR) component, Y is 1.2 min. Calculate Selectivity factor of the column