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QUESTION 1 Looking at equation 1. (Absorbance = a*b*Concentration) if we know that the path length...
O mL QUESTION 17 After substituting the variables absorbance (A) and concentration (c) into the equation...
O mL QUESTION 17 After substituting the variables absorbance (A) and concentration (c) into the equation y=mx+b,providetherearranged equation used to solve for the concentration of food dye in a beverage sample. QUESTION 18 Choose the equation that best represents pH. Click Save and Submit to save and submit. Click Save All Answers to save all answers.
Absorbance Concentration (M) Dilution # 1 .79 S.000e-4 M Dilution #2 .54 3.750e-4 M Dilution #3...
Absorbance Concentration (M) Dilution # 1 .79 S.000e-4 M Dilution #2 .54 3.750e-4 M Dilution #3 .31 2.500e-4 M ilution #4 .11 1.250e-4 M Construct a plot of absorbance (y-axis) versus concentration (x-axis) from the data above. Determine the slope of the best-fit line. Make sure to force the best fit straight ine through the origin. Excel has an option to do this (instructions.for Excel 2013.on Windows, instructions.for Excel.2011 on Mac) >Submit your answer to this question to the correct...
.79 Dilution #1 Dilution #2 Dilution #3 Dilution #4 Absorbance Concentration (M) 5.000e-4 M .54 3.750e-4...
.79 Dilution #1 Dilution #2 Dilution #3 Dilution #4 Absorbance Concentration (M) 5.000e-4 M .54 3.750e-4 M 2.500e-4M 1.250e-4 M Construct a plot of absorbance (van) versus concentration (axis) from the data above. Determine the slope of the best-hit line. Make sure to force the best hit straight line through the origin. Excel has an option to do the instructions for Excel 2011 on Windows, instructions for Excel 2011 on Mac). > Submit your answer to this question to the...
.79 Dilution #1 Dilution #2 Dilution #3 Dilution #4 Absorbance Concentration (M) 5.000e-4 M .54 3.750e-4...
.79 Dilution #1 Dilution #2 Dilution #3 Dilution #4 Absorbance Concentration (M) 5.000e-4 M .54 3.750e-4 M 2.500e-4M 1.250e-4 M Construct a plot of absorbance (van) versus concentration (axis) from the data above. Determine the slope of the best-hit line. Make sure to force the best hit straight line through the origin. Excel has an option to do the instructions for Excel 2011 on Windows, instructions for Excel 2011 on Mac). > Submit your answer to this question to the...
Beer’s Law Objective : We will explore an application of absorption spectroscopy using calibration curves and...
Beer’s Law Objective : We will explore an application of absorption spectroscopy using calibration curves and Beer’s Law. Use the “LAB : HOW TO…” link from the class website if you need help with how to use balance, Bunsen burner… and such. Introduction: You may write this information in your lab notebook for your own reference. It can’t be cut and pasted. Different solutions have different spectral properties. In this portion of the experiment those properties will be utilized to...
Table 1. Concentrations of [Fe(Phen),1?, M, in water and UV- vis absorbance values recorded at 2...
Table 1. Concentrations of [Fe(Phen),1?, M, in water and UV- vis absorbance values recorded at 2 -505 nm. Concentration of [Fe(Phen)/, M Absorbance 9.500 x 10 0.999 4.250 x 10 0.480 0.219 2.125 10% 1.063 x 10 0.104 0.000 0.003 Table 2. UV-vis absorbance values of [Fe(phen)]* held at 35 °C after mixing with H SO, and recorded at 5 minute intervals (in water at max = 505 nm). Time (minutes) Absorbance 0.997 0.935 0.877 0.823 0.772 0.724 0.680 0.638...
What's the concentration of [FeSCN2+] using limiting reactant theory and equation? For each test tube solution...
What's the concentration of [FeSCN2+] using limiting
reactant theory and equation?
For each test tube solution enter the initial concentration of Fe+ and SCNthe equilibrium concentration of FeSCN2: into the ICE table given. Complete entries for the rest of the table and calculate the K value for each of the tables. The values of K should be confined to a narrow range to reflect constancy. Comment on the quality of your work in this regard and calculate the average K....
PLEASE HELP! 1. Solve for concentration (x) using your best fit line from the graph (y=mx+b) 2....
PLEASE HELP!
1. Solve for concentration (x) using your best fit
line from the graph (y=mx+b)
2. What is the concentration of your unknown solution in
mM?
3. What is the molar absorptivity (ϵ) of the drink mix? (In
units of mM-1 cm-1)
Table 1: Red 40 Dye Solution [Red 40), M 0.1000 0.0800 0.0500 0.0200 0.0000 Absorbance, AU 0.348 0.295 0.147 0.075 0 Blank Analytical A, nm: Unknown No: Unknown Abs: Slope of B-L Plot: Int'pt of Plot: [Red 40)...
the guiding questions. the max absorbance is 460. Guiding questions complex turque . Compare the molar...
the
guiding questions. the max absorbance is 460.
Guiding questions complex turque . Compare the molar absorptivity coefficients you obtained with SCN and Fe" as limiting reagents. Would you expect them to be the same? Why or why not? (Week 1) • The accepted molar absorptivity coefficient for FeSCN is 7.0x10' M'cm''. Find the bias and relative bias of your values and suggest possible sources of errors. (Week 1) • Which molar absorptivity coefficient will you use to calculate the...
34 QUESTION 32 This fact pattern provides information needed for Q#32-Q#34. On Mar. 1, Year 4....
34
QUESTION 32 This fact pattern provides information needed for Q#32-Q#34. On Mar. 1, Year 4. Wizard rented out some office space to another firm for one year starting on that date. The monthly rent on this space is $700 and the tenant was required to pay Wizard for all 12 months on the move-in date, Mar. 1, Year 4. The Wizard received the correct amount and Wizard's bookkeeping staff treated the entire amount received as Rent Revenue on Mar....
O mL QUESTION 17 After substituting the variables absorbance (A) and concentration (c) into the equation y=mx+b,providetherearranged equation used to solve for the concentration of food dye in a beverage sample. QUESTION 18 Choose the equation that best represents pH. Click Save and Submit to save and submit. Click Save All Answers to save all answers.
Absorbance Concentration (M) Dilution # 1 .79 S.000e-4 M Dilution #2 .54 3.750e-4 M Dilution #3 .31 2.500e-4 M ilution #4 .11 1.250e-4 M Construct a plot of absorbance (y-axis) versus concentration (x-axis) from the data above. Determine the slope of the best-fit line. Make sure to force the best fit straight ine through the origin. Excel has an option to do this (instructions.for Excel 2013.on Windows, instructions.for Excel.2011 on Mac) >Submit your answer to this question to the correct...
.79 Dilution #1 Dilution #2 Dilution #3 Dilution #4 Absorbance Concentration (M) 5.000e-4 M .54 3.750e-4 M 2.500e-4M 1.250e-4 M Construct a plot of absorbance (van) versus concentration (axis) from the data above. Determine the slope of the best-hit line. Make sure to force the best hit straight line through the origin. Excel has an option to do the instructions for Excel 2011 on Windows, instructions for Excel 2011 on Mac). > Submit your answer to this question to the...
.79 Dilution #1 Dilution #2 Dilution #3 Dilution #4 Absorbance Concentration (M) 5.000e-4 M .54 3.750e-4 M 2.500e-4M 1.250e-4 M Construct a plot of absorbance (van) versus concentration (axis) from the data above. Determine the slope of the best-hit line. Make sure to force the best hit straight line through the origin. Excel has an option to do the instructions for Excel 2011 on Windows, instructions for Excel 2011 on Mac). > Submit your answer to this question to the...
Table 1. Concentrations of [Fe(Phen),1?, M, in water and UV- vis absorbance values recorded at 2 -505 nm. Concentration of [Fe(Phen)/, M Absorbance 9.500 x 10 0.999 4.250 x 10 0.480 0.219 2.125 10% 1.063 x 10 0.104 0.000 0.003 Table 2. UV-vis absorbance values of [Fe(phen)]* held at 35 °C after mixing with H SO, and recorded at 5 minute intervals (in water at max = 505 nm). Time (minutes) Absorbance 0.997 0.935 0.877 0.823 0.772 0.724 0.680 0.638...
What's the concentration of [FeSCN2+] using limiting
reactant theory and equation?
For each test tube solution enter the initial concentration of Fe+ and SCNthe equilibrium concentration of FeSCN2: into the ICE table given. Complete entries for the rest of the table and calculate the K value for each of the tables. The values of K should be confined to a narrow range to reflect constancy. Comment on the quality of your work in this regard and calculate the average K....
PLEASE HELP!
1. Solve for concentration (x) using your best fit
line from the graph (y=mx+b)
2. What is the concentration of your unknown solution in
mM?
3. What is the molar absorptivity (ϵ) of the drink mix? (In
units of mM-1 cm-1)
Table 1: Red 40 Dye Solution [Red 40), M 0.1000 0.0800 0.0500 0.0200 0.0000 Absorbance, AU 0.348 0.295 0.147 0.075 0 Blank Analytical A, nm: Unknown No: Unknown Abs: Slope of B-L Plot: Int'pt of Plot: [Red 40)...
the
guiding questions. the max absorbance is 460.
Guiding questions complex turque . Compare the molar absorptivity coefficients you obtained with SCN and Fe" as limiting reagents. Would you expect them to be the same? Why or why not? (Week 1) • The accepted molar absorptivity coefficient for FeSCN is 7.0x10' M'cm''. Find the bias and relative bias of your values and suggest possible sources of errors. (Week 1) • Which molar absorptivity coefficient will you use to calculate the...
34
QUESTION 32 This fact pattern provides information needed for Q#32-Q#34. On Mar. 1, Year 4. Wizard rented out some office space to another firm for one year starting on that date. The monthly rent on this space is $700 and the tenant was required to pay Wizard for all 12 months on the move-in date, Mar. 1, Year 4. The Wizard received the correct amount and Wizard's bookkeeping staff treated the entire amount received as Rent Revenue on Mar....
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