Please help me with these questions. I think part a is right but the rest I really don't understand them. Please explain in details on how to figure these questions.
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Please help me with these questions. I think part a is right but
the rest I...
am i correct on these questions? if not please let me know how i can improve...
am i correct on these questions? if not please let me know how
i can improve them. thanks!
c. (6 pts) A certain sample was run through a GC. and the chromatogram given below was produced What information can you determine about the sample that produced this gas chromatogram you say about the component(s) in the sample? Be sure to include as much relevant information as you can for full credit. lover Be or SA Different Info Difference in Retention...
1. Select an appropriate type of column for separating these steroids and give the rationale for...
1. Select an appropriate type of column for separating these steroids and give the rationale for your selection. HO HO ОН OH Prednisolone Prednisone 2. You are using a C18 Reverse Phase column and the parameters shown below to separate Acetaminophen, Caffeine, and Benzoic Acid. You observe three peaks in your chromatogram (Huzzah!). Which corresponds to which compound? Explain the rationale behind your assignment. OH C18 REVERSED PHASE COLUMN Acetaminophen HC N H, O Caffeine Column: Legacy L1 Size: 4.6...
help needed with this problem set Refer to the HPLC chromatograms below for a 5-component mixture of organic acids for the following questions. The specific HPLC parameters for chromatogram A (...
help needed with this problem set
Refer to the HPLC chromatograms below for a 5-component mixture of organic acids for the following questions. The specific HPLC parameters for chromatogram A (top) are described in the figure title and the insert. You only need the lecture notes and/or your personal experience to answer those questions. Mobile phase: 30 % MeCN, 70 % TFA, 0.1 M (pH 2.0) low rate: 1.0 mL/min 2Benzok Acid Maleic Aci 1. (a) Which component has the...
looking for a check of my work, is this correct? if not please let me know....
looking for a check of my work, is this correct? if not please
let me know. thanks!
1. (23 Total Points) Gas Chromatography a. (5 pts) Circle the BEST answer for the question below. Of the compounds listed below, which would you expect to eluto last from a nonpolar gas chromatographic column? 3 • n-Propanol (CH3CH2CH2OH) Polar Polar = 7* (mPoland 1. Methanol (CH3OH) Polar NON-Polar = 2nd 4. n-Butanol (CH3CH2CH2CH2OH) ВР 1st Low C . n-Pentanol (CH3CH2CH2CH2CH2OH) and Higher...
L. Choose the correct answer: 1) Reversed phase liquid chromatography refers to (a) the use of...
L. Choose the correct answer: 1) Reversed phase liquid chromatography refers to (a) the use of non polar solvent as the eluent in HPLC. (b) the use of polar material as the stationary phase in a chromatographic column. the use of non-polar material as the stationary phase in a chromatographic column 2) A solute with a retention time of 325 seconds has a base width of 15 seconds. The column is 11.5 cm long. The c (2 points) olumn has...
Chromatography Basics Multiple Choice: Answer the following multiple choice questions about Chromatography Basics (SHOW WORKING): 1) In...
Chromatography Basics Multiple Choice: Answer the following multiple choice questions about Chromatography Basics (SHOW WORKING): 1) In a given chromatographic column, A) different solutes behave as if there are a different number of theoretical plates for each. B) the number of theoretical plates is the same for all solutes. C) efficiency is improved by increasing plate height. 2) What useful information can be found from a Van Deemter plot? A) The selectivity factor B) Optimum mobile phase flow rate C) Optimum...
Table 2: Alcohol and Ketone Standards GC Retention Times GC#: Retention time Alcohol Standard Mixture Phent...
Table 2: Alcohol and Ketone Standards GC Retention Times GC#: Retention time Alcohol Standard Mixture Phent ion= 2.05Smin low Peak 1 Compound Name: athanol Rapesnal utanal aclapeatanal 4.755min oilng 6.895min .230 min Peak 2 Compound Name: Peak 3 Compound Name: Peak 4 Compound Name: GC#:1 Ketone Standard Mixture Retention time 2.575un Peak 1 Compound Name: Acclono Butanon a Pentanone 2tHex anon Peak 2 Compound Name: min Peak 3 Compound Name: 615 min 1D. 307 min Peak 4 Compound Name: Part...
slightly confused I thought thought Rf 0 was solid andRf1 is slightly liquid please any...
slightly confused I thought Rf 0 was solid and
Rf1 is slightly liquid please any help is greatly appreciated.3. Two extreme values for the Retention Factor are 0 and 1 a) Explain what each Re value means in terms of the substance's affinity for the mobile phase and for the stationary phase. b) Describe the features of molecules that would have these extreme Rr values under the conditions in this experiment: the solvent an 80:20 mix of petroleum ether and acetone, the...
Need help with 5 Please The following questions 1-6 relate to the chromatogram shown below, obtained...
Need help with 5 Please
The following questions 1-6 relate to the chromatogram shown below, obtained in an experiment to separate 3 components in a mixture using a column of internal diameter 320.0 um (including the stationary phase thickness) and 30.0 m in length. The stationary phase thickness is 3.0 um on each side of the inside wall of the column, as shown in the figure. 320 um Detector Signal (UA) 0.6 1.2 1.8 Time (min) Unretained A 0.57 2.29...
Please help me with these questions. I got part of it right not sure about the...
Please help me with these
questions. I got part of it right not sure about the rest
Incorrect Question 2 0/1 pts The mechanism by which insulin decreases oxidation of fatty acids is: O Inhibition of malonyl CoA synthesis O Activation of acetyl CoA carboxylase O Dephosphorylation of carnitine acyl transferase O Dephosphorylation of ACCOA Partial Question 3 1/3 pts Select all the ways in which beta oxidation of fatty acids is regulated Phosphorylation/dephosphorylation of enyzmes Allosterically by ADP Allosterically...
am i correct on these questions? if not please let me know how
i can improve them. thanks!
c. (6 pts) A certain sample was run through a GC. and the chromatogram given below was produced What information can you determine about the sample that produced this gas chromatogram you say about the component(s) in the sample? Be sure to include as much relevant information as you can for full credit. lover Be or SA Different Info Difference in Retention...
1. Select an appropriate type of column for separating these steroids and give the rationale for your selection. HO HO ОН OH Prednisolone Prednisone 2. You are using a C18 Reverse Phase column and the parameters shown below to separate Acetaminophen, Caffeine, and Benzoic Acid. You observe three peaks in your chromatogram (Huzzah!). Which corresponds to which compound? Explain the rationale behind your assignment. OH C18 REVERSED PHASE COLUMN Acetaminophen HC N H, O Caffeine Column: Legacy L1 Size: 4.6...
help needed with this problem set
Refer to the HPLC chromatograms below for a 5-component mixture of organic acids for the following questions. The specific HPLC parameters for chromatogram A (top) are described in the figure title and the insert. You only need the lecture notes and/or your personal experience to answer those questions. Mobile phase: 30 % MeCN, 70 % TFA, 0.1 M (pH 2.0) low rate: 1.0 mL/min 2Benzok Acid Maleic Aci 1. (a) Which component has the...
looking for a check of my work, is this correct? if not please
let me know. thanks!
1. (23 Total Points) Gas Chromatography a. (5 pts) Circle the BEST answer for the question below. Of the compounds listed below, which would you expect to eluto last from a nonpolar gas chromatographic column? 3 • n-Propanol (CH3CH2CH2OH) Polar Polar = 7* (mPoland 1. Methanol (CH3OH) Polar NON-Polar = 2nd 4. n-Butanol (CH3CH2CH2CH2OH) ВР 1st Low C . n-Pentanol (CH3CH2CH2CH2CH2OH) and Higher...
L. Choose the correct answer: 1) Reversed phase liquid chromatography refers to (a) the use of non polar solvent as the eluent in HPLC. (b) the use of polar material as the stationary phase in a chromatographic column. the use of non-polar material as the stationary phase in a chromatographic column 2) A solute with a retention time of 325 seconds has a base width of 15 seconds. The column is 11.5 cm long. The c (2 points) olumn has...
Table 2: Alcohol and Ketone Standards GC Retention Times GC#: Retention time Alcohol Standard Mixture Phent ion= 2.05Smin low Peak 1 Compound Name: athanol Rapesnal utanal aclapeatanal 4.755min oilng 6.895min .230 min Peak 2 Compound Name: Peak 3 Compound Name: Peak 4 Compound Name: GC#:1 Ketone Standard Mixture Retention time 2.575un Peak 1 Compound Name: Acclono Butanon a Pentanone 2tHex anon Peak 2 Compound Name: min Peak 3 Compound Name: 615 min 1D. 307 min Peak 4 Compound Name: Part...
slightly confused I thought Rf 0 was solid and
Rf1 is slightly liquid please any help is greatly appreciated.3. Two extreme values for the Retention Factor are 0 and 1 a) Explain what each Re value means in terms of the substance's affinity for the mobile phase and for the stationary phase. b) Describe the features of molecules that would have these extreme Rr values under the conditions in this experiment: the solvent an 80:20 mix of petroleum ether and acetone, the...
Need help with 5 Please
The following questions 1-6 relate to the chromatogram shown below, obtained in an experiment to separate 3 components in a mixture using a column of internal diameter 320.0 um (including the stationary phase thickness) and 30.0 m in length. The stationary phase thickness is 3.0 um on each side of the inside wall of the column, as shown in the figure. 320 um Detector Signal (UA) 0.6 1.2 1.8 Time (min) Unretained A 0.57 2.29...
Please help me with these
questions. I got part of it right not sure about the rest
Incorrect Question 2 0/1 pts The mechanism by which insulin decreases oxidation of fatty acids is: O Inhibition of malonyl CoA synthesis O Activation of acetyl CoA carboxylase O Dephosphorylation of carnitine acyl transferase O Dephosphorylation of ACCOA Partial Question 3 1/3 pts Select all the ways in which beta oxidation of fatty acids is regulated Phosphorylation/dephosphorylation of enyzmes Allosterically by ADP Allosterically...
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