Homework Answers
(i) The resolution of column A is the highest, hence Column A has more theoretical plates.
Note: The pressure is also the highest for column A.
(ii) The resolution of column C is the least, hence Column C has a smaller plate height.
Note: The pressure is also the least for column C.
(iii) The retention time of the compound with the highest partition coefficient = 2.0 min (The average)
(iv) To maintain good resolution.
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Which column has more theoretical plates?
Which column has a smaller plate height?
What is the...
3) Use the chromatogram to answer the following questions. 7.54 655 bar R = 6.44 280...
3) Use the chromatogram to answer the following questions. 7.54 655 bar R = 6.44 280 bar Rs = 5.04 165 bar a) Which column has more theoretical plates? b) Which column has a smaller plate height? c) What is the retention time of the compound with the highest partition coefficient? d) Given the flow rate is constant for columns A-C, explain why the most pressure is needed to obtain a constant flow rate for column A?
Chromatograms of compounds A and B were obtained at the same flowrate with two columns of...
Chromatograms of compounds A and B were obtained at the same
flowrate with two columns of equal length. The Value of tm is 1.3
min in both cases.
Chromatograms
of compounds A and B were obtained at the same flow rate with two
columns of equal length. The value of
tm is
1.3 min in both cases.
I Column 1 Column 2 12 10 Time What is the numcrical valac of the nenn factor of pak A what isthemererkal valse...
need help with number 2 HW #3 for Chem 318 Due: April 29, 2019 1. Solute A has a K 2.5 for an extraction between water (phase 1) and chloroform (phase 2). If 100 mL of a 0.01 fraction will be extr...
need help with number 2
HW #3 for Chem 318 Due: April 29, 2019 1. Solute A has a K 2.5 for an extraction between water (phase 1) and chloroform (phase 2). If 100 mL of a 0.01 fraction will be extracted? For the same solute and, what fraction will be extracted if 5 extractions wi 80 mL chloroform each are used (instead of one 400 ml extraction)? M solution containing solute A in water is extracted one time with...
5. Which of the following bank accounts has the highest effective annual return (EAR)? An account...
5. Which of the following bank accounts has the highest effective annual return (EAR)? An account that pays 8% nominal interest with monthly compounding An account that pays 8% nominal interest with annual compounding An account that pays 7% nominal interest with daily (365-day) compounding An account that pays 7% nominal interest with monthly compounding a. b. C. d. 6. Which of the following statements regarding a 30-year monthly payment amortized mortgage with a fixed nominal interest rate of 10%...
for this experiment i got a yield of 0.02g. what is the theoretical and percentage yield?...
for this experiment i got a yield of 0.02g. what is the
theoretical and percentage yield?
STUDENT HANDOUT Synthesis of poly(2-methoxy-542-ethylhexyloxy-1.4-phenyle Purpose of the Experiment ylhexyloxy-1.4-phenylenevinylene (MEH-PPV) The purpose of this experiment is 10 bis bromomethyl)-1-methoxy-4-2- experiment is to synthesize a polymer using a Gilch polymerization of 2,5 methyl)-1-methoxy-4-(2-ethylhexyloxybenzene, to investigate the polymer's photophysica properties, and to understand the mechanism of the polymerization reaction Introduction Polyphenylene vinylenes) or PPVs are highly luminescent polymers that are used for a variety of...
3) Use the chromatogram to answer the following questions. 7.54 655 bar R = 6.44 280 bar Rs = 5.04 165 bar a) Which column has more theoretical plates? b) Which column has a smaller plate height? c) What is the retention time of the compound with the highest partition coefficient? d) Given the flow rate is constant for columns A-C, explain why the most pressure is needed to obtain a constant flow rate for column A?
Chromatograms of compounds A and B were obtained at the same
flowrate with two columns of equal length. The Value of tm is 1.3
min in both cases.
Chromatograms
of compounds A and B were obtained at the same flow rate with two
columns of equal length. The value of
tm is
1.3 min in both cases.
I Column 1 Column 2 12 10 Time What is the numcrical valac of the nenn factor of pak A what isthemererkal valse...
need help with number 2
HW #3 for Chem 318 Due: April 29, 2019 1. Solute A has a K 2.5 for an extraction between water (phase 1) and chloroform (phase 2). If 100 mL of a 0.01 fraction will be extracted? For the same solute and, what fraction will be extracted if 5 extractions wi 80 mL chloroform each are used (instead of one 400 ml extraction)? M solution containing solute A in water is extracted one time with...
5. Which of the following bank accounts has the highest effective annual return (EAR)? An account that pays 8% nominal interest with monthly compounding An account that pays 8% nominal interest with annual compounding An account that pays 7% nominal interest with daily (365-day) compounding An account that pays 7% nominal interest with monthly compounding a. b. C. d. 6. Which of the following statements regarding a 30-year monthly payment amortized mortgage with a fixed nominal interest rate of 10%...
for this experiment i got a yield of 0.02g. what is the
theoretical and percentage yield?
STUDENT HANDOUT Synthesis of poly(2-methoxy-542-ethylhexyloxy-1.4-phenyle Purpose of the Experiment ylhexyloxy-1.4-phenylenevinylene (MEH-PPV) The purpose of this experiment is 10 bis bromomethyl)-1-methoxy-4-2- experiment is to synthesize a polymer using a Gilch polymerization of 2,5 methyl)-1-methoxy-4-(2-ethylhexyloxybenzene, to investigate the polymer's photophysica properties, and to understand the mechanism of the polymerization reaction Introduction Polyphenylene vinylenes) or PPVs are highly luminescent polymers that are used for a variety of...
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