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e 11,500 L mol- am. What is the A specific sterold has Amex 252 nm and...
A specific steroid has a Amax of 284 nm and a molar absorptivity e of 11,500...
A specific steroid has a Amax of 284 nm and a molar absorptivity e of 11,500 L mol cm1. What is the concentration of the compound in a solution whose absorbance at 284 nm is A 0.065 with a sample pathlength of 1.00 cm? concentration: М
A solution of a specific vitamin has a Imax of 287 nm and a concentration of...
A solution of a specific vitamin has a Imax of 287 nm and a concentration of 4.93 x 10-7M. The absorbance of the solution at 287 nm is A = 0.135. What is the molar absorptivity of the vitamin at 287 nm? A sample path length is 1.00 cm. molar absorptivity: L mol-'cm-1
A solution of a specific vitamin has ?max-231 nm and a concentration of 4.48 10.7 M....
A solution of a specific vitamin has ?max-231 nm and a concentration of 4.48 10.7 M. The absorbance of the solution at 231 nm is A0.145. What is the molar absorptivity of the vitamin 231 m? (sample pathlength- 1.00 cm) Number L mol cm
A solution contains two components, A and B. At 520 nm component A has a molar...
A solution contains two components, A and B. At 520 nm component A has a molar absorptivity of 0.50 mmol^-1 and component B has a molar absorptivity of 0.20 mmol^-1. At 610 nm component A has a molar absorptivity of 0.10 mmol^-1 and component B has a molar absorptivity of 0.40 mmol^-1. If the total absorbance at 520 nm is 1.00, and the total absorbance at 610 nm is 0.80, what is the concentration of component A in the solution?
At 575.0 nm, a solution containing 0.0156 g/L CuSO4 (159.61 g/mol) in a cell of path...
At 575.0 nm, a solution containing 0.0156 g/L CuSO4 (159.61 g/mol) in a cell of path length 2.00 cm gave an absorbance (A) of 0.1549. Calculate (at 575 nm): a) the molarity of CuSO4 b) the absorptivity of CuSO4 units of (L/g.cm) c) the molar absorptivity of CuSO4 [Report the results, without units, to three sig.fig.]
I need help with 5 & 7 please (a) 15.8% (d) 23.8% (b) 0.492 (e) 0.085...
I need help with 5 & 7 please
(a) 15.8% (d) 23.8% (b) 0.492 (e) 0.085 (c) 39.4% (f) 5.38% *13-3 Calculate the percent transmittance of solutions having half the abse solutions in Problem 13-1. f the absorbance of the cent transmittance of *13-4 Calculate the absorbance of solutions having twice the percent transmiti those in Problem 13-2. *13-5 A solution containing 6.23 ppm KMnO, had a transmittance of 0.195 in a 10 cell at 520 nm. Calculate the molar...
An unknown amount of a compound with a molecular mass of 270.93 g/mol is dissolved in...
An unknown amount of a compound with a molecular mass of 270.93 g/mol is dissolved in a 10-mL volumetric flask. A 1.00-mL aliquot of this solution is transferred to a 25-mL volumetric flask and e water is added to dilute to the mark. The absorbance of this diluted solution at 339 nm is 0.517 in a 1 cm cuvette. The molar absorptivity for this compound at 339 nm is esso- 5835 M-1cm-1 (a) What is the concentration of the compound...
You have a compound that has an absorption at 291 nm. At a concentration of 0.025...
You have a compound that has an absorption at 291 nm. At a
concentration of 0.025 mM, the absorbance A291 = 0.40.
What is its molar absorptivity of this sample (in
M-1cm-1)? Assume you are using a 1 cm cuvette
for your experiment.
Incorrect Question 1 0/2 pts You have a compound that has an absorption at 291 nm. At a concentration of 0.025 mM, the absorbance A291 = 0.40. What is its molar absorbtivity of this sample (in M?cm-?)?...
A 5.90 x 10-5 M sample of compound X in a solvent has an absorbance of...
A 5.90 x 10-5 M sample of compound X in a solvent has an absorbance of 0.344 at 528 nm in a 1.000 cm cuvet. The solvent alone has an absorbance of 0.056. What is the molar absorptivity of compound X? € = M-1.cm-1 A different sample of compound X in the same solvent has an absorbance of 0.506 at 528 nm when measured with the same cuvet. What is the concentration of this second sample? [X] = mol X
2. The absorbance of a 2.31 x 10 a wavelength of 266 nm in a 1.00...
2. The absorbance of a 2.31 x 10 a wavelength of 266 nm in a 1.00 cm cell. absorptivity at 266 nm. M solution of a compound is 0.822 at Calculate the molar The following absorption data were calculated in-an experiment: 3. Absorbance 0.000 0.090 0.181 0.271 0.361 0.450 0.539 0.627 0.7 Concentration (м) 0.000 1x10-3 2x10-3 3x10 3 4x10-3 5x10~3 6x10-3 7x10-3 8x1 Plot Absorbance vs. Concentration and calculate the molar absorptivity coefficient from the slope if the a)...
A specific steroid has a Amax of 284 nm and a molar absorptivity e of 11,500 L mol cm1. What is the concentration of the compound in a solution whose absorbance at 284 nm is A 0.065 with a sample pathlength of 1.00 cm? concentration: М
A solution of a specific vitamin has a Imax of 287 nm and a concentration of 4.93 x 10-7M. The absorbance of the solution at 287 nm is A = 0.135. What is the molar absorptivity of the vitamin at 287 nm? A sample path length is 1.00 cm. molar absorptivity: L mol-'cm-1
A solution of a specific vitamin has ?max-231 nm and a concentration of 4.48 10.7 M. The absorbance of the solution at 231 nm is A0.145. What is the molar absorptivity of the vitamin 231 m? (sample pathlength- 1.00 cm) Number L mol cm
A solution contains two components, A and B. At 520 nm component A has a molar absorptivity of 0.50 mmol^-1 and component B has a molar absorptivity of 0.20 mmol^-1. At 610 nm component A has a molar absorptivity of 0.10 mmol^-1 and component B has a molar absorptivity of 0.40 mmol^-1. If the total absorbance at 520 nm is 1.00, and the total absorbance at 610 nm is 0.80, what is the concentration of component A in the solution?
I need help with 5 & 7 please
(a) 15.8% (d) 23.8% (b) 0.492 (e) 0.085 (c) 39.4% (f) 5.38% *13-3 Calculate the percent transmittance of solutions having half the abse solutions in Problem 13-1. f the absorbance of the cent transmittance of *13-4 Calculate the absorbance of solutions having twice the percent transmiti those in Problem 13-2. *13-5 A solution containing 6.23 ppm KMnO, had a transmittance of 0.195 in a 10 cell at 520 nm. Calculate the molar...
An unknown amount of a compound with a molecular mass of 270.93 g/mol is dissolved in a 10-mL volumetric flask. A 1.00-mL aliquot of this solution is transferred to a 25-mL volumetric flask and e water is added to dilute to the mark. The absorbance of this diluted solution at 339 nm is 0.517 in a 1 cm cuvette. The molar absorptivity for this compound at 339 nm is esso- 5835 M-1cm-1 (a) What is the concentration of the compound...
You have a compound that has an absorption at 291 nm. At a
concentration of 0.025 mM, the absorbance A291 = 0.40.
What is its molar absorptivity of this sample (in
M-1cm-1)? Assume you are using a 1 cm cuvette
for your experiment.
Incorrect Question 1 0/2 pts You have a compound that has an absorption at 291 nm. At a concentration of 0.025 mM, the absorbance A291 = 0.40. What is its molar absorbtivity of this sample (in M?cm-?)?...
A 5.90 x 10-5 M sample of compound X in a solvent has an absorbance of 0.344 at 528 nm in a 1.000 cm cuvet. The solvent alone has an absorbance of 0.056. What is the molar absorptivity of compound X? € = M-1.cm-1 A different sample of compound X in the same solvent has an absorbance of 0.506 at 528 nm when measured with the same cuvet. What is the concentration of this second sample? [X] = mol X
2. The absorbance of a 2.31 x 10 a wavelength of 266 nm in a 1.00 cm cell. absorptivity at 266 nm. M solution of a compound is 0.822 at Calculate the molar The following absorption data were calculated in-an experiment: 3. Absorbance 0.000 0.090 0.181 0.271 0.361 0.450 0.539 0.627 0.7 Concentration (м) 0.000 1x10-3 2x10-3 3x10 3 4x10-3 5x10~3 6x10-3 7x10-3 8x1 Plot Absorbance vs. Concentration and calculate the molar absorptivity coefficient from the slope if the a)...
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