Assume the molar absorptivity (ε) for CoCl42- at 700 nm is 412.2 M-1 cm-1. If d,...
Assume the molar absorptivity (ε) for CoCl42- at 700 nm is 412.2 M-1 cm-1. If d, the cell path length, is equal to 0.85 cm for the cuvettes being used, and if the measured absorbance (A) at 700 nm is 1.305, what is [CoCl42-]?
Express your response to four digits after the decimal.
Homework Answers
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Assume the molar absorptivity (ε) for
CoCl42- at 700 nm is 412.2 M-1
cm-1. If d,...
The molar absorptivity of FD&C Yellow #5 at 430 nm is =2.43*104 M-1cm-1. The absorbance of...
The molar absorptivity of FD&C Yellow #5 at 430 nm is
=2.43*104 M-1cm-1. The absorbance
of a sample of Gatorade Lemon-Lime at 430 nm is measured as 0.27
using a 1 cm cuvette. Assuming the path length is 1 cm, calculate
the molarity of Yellow #5 in Gatorade.
Questions 7-10 concern the [Fe(SCN)2l+ complex that has a molar absorptivity ε = 7.00x103 M-1cm-1 at...
Questions 7-10 concern the [Fe(SCN)2l+ complex that has a molar absorptivity ε = 7.00x103 M-1cm-1 at 580 nm (maximum absorption wavelength). Final answer: 7. Calculate the absorbance of a 2.50 x 10-5 M solution of the complex at 580 nm in a 1.00-cm cell. Final answer: 8. Calculate the absorbance of a solution in which the concentration of the complex is twice that in Question 6. Final answer: 9. Calculate the transmittance of the solution described in Question 7? Final...
If the molar absorptivity at a specific wavelength is known for a protein, it is pretty...
If the molar absorptivity at a specific wavelength is known for a protein, it is pretty easy to determine its concentration simply by measuring its absorbance and using Beers law. Based on the following information, spectrophotometrically determine the concentration (in mg/mL) of a solution of the protein lysozyme. -the molar absorptivity at 280 nm (converted for units of mg/mL) is & = 0.243 mg.cm -the absorbance of a solution of lysozyme is 0.923 when the path length is 1 cm.
Calculate the expected absorbance of solution of a 5.50x10-6 M solution of Blue # measured at...
Calculate the expected absorbance of solution of a 5.50x10-6 M solution of Blue # measured at 629 nm in a 1.50cm cell. The molar absorptivity for Blue #1 is 1.30×105 M-1cm-1 at 629 nm 4. A 2.50x10-5 M solution of a specific dye has an absorbance value of 1.300 when measured at 525 nm in a cell with a path length of 2.00 cm. Calculate the molar absorptivity of this dye at this wavelength 5.
M-1-cm* (at a wavelength The transition metal complex ion [Ru(Bipy)a]* has a molar absorptivity of 1.35x...
M-1-cm* (at a wavelength The transition metal complex ion [Ru(Bipy)a]* has a molar absorptivity of 1.35x 10 2. Ceof 450 nm). Calculate the absorbance of a 1.80x10 M solution of [Ru(Bipy))2 at 450 nm when measure in a 1.00 cm cell. CamScanner
Question 8 Status: Tries remaining: 21 Points possible: 1.00 Suppose you measure the absorbance of a...
Question 8 Status: Tries remaining: 21 Points possible: 1.00 Suppose you measure the absorbance of a yellow dye solution in a 1.00 cm cuvette. cm what is The absorbance of the solution at 427 nm is 0.46. If the molar absorptivity of yellow dye at 427 nm is 27400 M the concentration of the solution? Answer: Question 9 Status: Tries remaining: 2 Points possible: 1.00 If you plot the absorbance measurements of solutions vs. their concentrations, what is the slope...
A compound whose molecular weight is 100 g/mol, has a molar absorptivity of 1.00X10^5 M-1 cm-1....
A compound whose molecular weight is 100 g/mol, has a molar absorptivity of 1.00X10^5 M-1 cm-1. How many grams of this compound should be dissolved in exactly 1 liter of solution so that after diluting it 200 times the solution has an absorbance of 0.500 in a cell of 1.00 cm?
3. Calculate the molar absorptivity of a 0.200 M compound A if the light path length...
3. Calculate the molar absorptivity of a 0.200 M compound A if the light path length is 1.0 cm, and the absorbance at 254 nm is 0.428. Show work for credit! 6 pts E=ALIC 4.A 0.15 mol of a solid weak acid, HA, was dissolved in 460 mL of water. a. write an equilibrium reaction for the reaction of HA in water. 2 pts b. Calculate the equilibrium concentrations of each reactant and product if K= 5.7x104.6 pts Show work...
answer please Question 1 12.5 points Save Answer The complex that is formed between galium (1)...
answer please
Question 1 12.5 points Save Answer The complex that is formed between galium (1) and B-hydroxyquinoline has an absorption maximum of 568nm. A 0.0082M solution of the complex has a transmittance of 42.9% when measured in a 1.00-cm cell at this wavelength. Calculate the molar absorptivity of the compex. Question 2 of 8 Question 2 12.5 points Save Answ Chromium(III) forms a complex with diphenylcarbazide whose molar absorptivity is 4.17X104 at 540 nm. Calculate the path length in...
Please help me answer the following questions: (iv) Calculate the molar extinction coefficient (molar absorptivity) of t...
Please help me answer the following
questions:
(iv) Calculate the molar extinction
coefficient (molar absorptivity) of the maximum absorbance of the
spectrum in Figure 1.
(v) Estimate the wavenumber gap
between the vibrational levels that gives the vibronic structure
apparent in the spectrum of anthracene. Check your answer before
proceeding to answer the next question. (Note: the peaks
are a single vibronic progression so you can average your estimates
of the wavenumber gap.)
5 M compound (2) Figure 1: Absorbance...
The molar absorptivity of FD&C Yellow #5 at 430 nm is
=2.43*104 M-1cm-1. The absorbance
of a sample of Gatorade Lemon-Lime at 430 nm is measured as 0.27
using a 1 cm cuvette. Assuming the path length is 1 cm, calculate
the molarity of Yellow #5 in Gatorade.
Questions 7-10 concern the [Fe(SCN)2l+ complex that has a molar absorptivity ε = 7.00x103 M-1cm-1 at 580 nm (maximum absorption wavelength). Final answer: 7. Calculate the absorbance of a 2.50 x 10-5 M solution of the complex at 580 nm in a 1.00-cm cell. Final answer: 8. Calculate the absorbance of a solution in which the concentration of the complex is twice that in Question 6. Final answer: 9. Calculate the transmittance of the solution described in Question 7? Final...
If the molar absorptivity at a specific wavelength is known for a protein, it is pretty easy to determine its concentration simply by measuring its absorbance and using Beers law. Based on the following information, spectrophotometrically determine the concentration (in mg/mL) of a solution of the protein lysozyme. -the molar absorptivity at 280 nm (converted for units of mg/mL) is & = 0.243 mg.cm -the absorbance of a solution of lysozyme is 0.923 when the path length is 1 cm.
Calculate the expected absorbance of solution of a 5.50x10-6 M solution of Blue # measured at 629 nm in a 1.50cm cell. The molar absorptivity for Blue #1 is 1.30×105 M-1cm-1 at 629 nm 4. A 2.50x10-5 M solution of a specific dye has an absorbance value of 1.300 when measured at 525 nm in a cell with a path length of 2.00 cm. Calculate the molar absorptivity of this dye at this wavelength 5.
M-1-cm* (at a wavelength The transition metal complex ion [Ru(Bipy)a]* has a molar absorptivity of 1.35x 10 2. Ceof 450 nm). Calculate the absorbance of a 1.80x10 M solution of [Ru(Bipy))2 at 450 nm when measure in a 1.00 cm cell. CamScanner
Question 8 Status: Tries remaining: 21 Points possible: 1.00 Suppose you measure the absorbance of a yellow dye solution in a 1.00 cm cuvette. cm what is The absorbance of the solution at 427 nm is 0.46. If the molar absorptivity of yellow dye at 427 nm is 27400 M the concentration of the solution? Answer: Question 9 Status: Tries remaining: 2 Points possible: 1.00 If you plot the absorbance measurements of solutions vs. their concentrations, what is the slope...
3. Calculate the molar absorptivity of a 0.200 M compound A if the light path length is 1.0 cm, and the absorbance at 254 nm is 0.428. Show work for credit! 6 pts E=ALIC 4.A 0.15 mol of a solid weak acid, HA, was dissolved in 460 mL of water. a. write an equilibrium reaction for the reaction of HA in water. 2 pts b. Calculate the equilibrium concentrations of each reactant and product if K= 5.7x104.6 pts Show work...
answer please
Question 1 12.5 points Save Answer The complex that is formed between galium (1) and B-hydroxyquinoline has an absorption maximum of 568nm. A 0.0082M solution of the complex has a transmittance of 42.9% when measured in a 1.00-cm cell at this wavelength. Calculate the molar absorptivity of the compex. Question 2 of 8 Question 2 12.5 points Save Answ Chromium(III) forms a complex with diphenylcarbazide whose molar absorptivity is 4.17X104 at 540 nm. Calculate the path length in...
Please help me answer the following
questions:
(iv) Calculate the molar extinction
coefficient (molar absorptivity) of the maximum absorbance of the
spectrum in Figure 1.
(v) Estimate the wavenumber gap
between the vibrational levels that gives the vibronic structure
apparent in the spectrum of anthracene. Check your answer before
proceeding to answer the next question. (Note: the peaks
are a single vibronic progression so you can average your estimates
of the wavenumber gap.)
5 M compound (2) Figure 1: Absorbance...
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