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Examine the given Beer's law standard curve for an unknown dye...
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...
Please help I am completely confused, I included the 2 graphs needed for this post lab....
Please help I am completely confused, I included the 2
graphs needed for this post lab. Thank you!
Postlab Assignments . (a) Using your own standard curve, the line equation you generated and Beer's law equation Equation 1) calculate the molar absorpivity (e) of blue dye. For all your measurem cuvette used is 1.00 cm. Use this as the value of b in Equation 1 ents, the size of (b) Using Beer's law equation again, what does a high value...
6. (20 points) A Beer's law curve for a red food dye (max ed food dye...
6. (20 points) A Beer's law curve for a red food dye (max ed food dye (max = 505 nm) is shown Absorbance vs. Concentration of Red Dye Absorbance at 505nm (AU) NO NON y 1.64x R1 -0.9993 0.1 0.2 0.5 0.6 0.7 0.3 0.4 Concentration (M) The red food dye used to prepare the standard solutions for the Beer stay above is also one of the components of Strawberry Kool Aid mix. An unknown mass of Strawberry Kool-Aid mix...
Data: Consider the data below for a Beer's Law calibration curve for an aqueous orange dye solution that has 2. mx4...
Data: Consider the data below for a Beer's Law calibration curve for an aqueous orange dye solution that has 2. mx450 nm. The solutions used were translucent. The data was collected using a 1.20cm wide test tube cuvette, using 2. = 450 nm. Trial Concentration (M) Absorbance P ercent Transmittance 1 0.0030 0.153 70.3 2 0 .0060 0.312 48.8 3 0 .0090 0.465 34.3 0.0120 0.627 23.6 0.0150 0.771 16.9 For each of the following errors/changes, indicate whether a repeat...
(5 questions) Data: Consider the data below for a Beer's Law calibration curve for an aqueous...
(5 questions) Data: Consider the data below for a Beer's Law calibration curve for an aqueous orange nye solution that has mas 450 nm. The solutions used were translucent. The data was collected using a 1.20cm wide test tube cuvette, using 2 = 450 nm. Trial Concentration (M) Absorbance Percent Transmittance 1 0 .0030 0.153 70.3 0.0060 0.312 48.8 0.0090 0.465 34.3 0.0120 0.627 23.6 0.0150 0.771 16.9 For each of the following errors/changes, indicate whether a repeat of the...
questions #1-3 please Questions. Beer's Law (1-5) The actual a value for Red 40 is 2.7...
questions #1-3 please
Questions. Beer's Law (1-5) The actual a value for Red 40 is 2.7 x 10 L/mole cm at 500 nm. Use this value, plus your highest absorbance reading at 500 nm, the b value of 1.0 cm and equation (1) to calculate the molarity (moles/L) of the dye. 2. The FW for Red 40 is 496 g/mole. Recalculate its concentration as g/L. Compare this value with the concentration of your original Kool Aid solution. The ratio of...
Beer lambert law. Simple Q Can some one find the molar absorbitiy "e" for the 1,1'-diethyl 2,2'-cyanine...
Beer lambert law. Simple Q
Can some one find the molar absorbitiy "e" for
the 1,1'-diethyl 2,2'-cyanine iodide. ( SEE DATA BELLOW
AND CALCULATIONS) and the theoretical value and explain where there
is a diffrence between them. Thank you so much.
3) Compare the experimental and literature values of ε (dye I only). Do you notice any discrepancies between these values? Dilution 1 Dilution2 Absorbance Dilution 3 Dilution 4 Dilutions 350 400 450 500 550 600 650 700 750 -0.2 Wavelength...
Page 10 Beer's Law Akuch Pyrs to shes your werk Show your work, Aplications Attach Peyes...
Page 10 Beer's Law Akuch Pyrs to shes your werk Show your work, Aplications Attach Peyes 27, what is the value of absorbance that corresponds to 35.0 %T? 28. Molar absorpt ivity is the absorptivity when concentration is in units of molarity and the gth is in centimeters. If a 1.53 x 10 M solution has an absorbance of 0.426 in a 1.00 em cell when measured at a wavelength of 254 nm, what is the molar absorptivity of the...
Need help finding equilibrium molarity Table 1: Calibration Curve Data (4 pts. total) Tube Vol. of...
Need help finding equilibrium molarity
Table 1: Calibration Curve Data (4 pts. total) Tube Vol. of 0.200M Volume of Volume of Total Vol. Fe(NO3)3 0.00200M KSCN 0.500M HNO; Smi 10.5 mL 150 mL zob 20.5ml 19.98m2 J 2 5.00mL lll ML 14.05 mL 20.16 mil 5.00 ml 1.5 mL 13.5 mL 20 ml 4 5.00mL 2.0 mL 13.01 mL 20.01 mL 15 500mL I 2.50 ML 12.5 mL 20 ml Table 2: Calibration Curve Calculations and Percent Transmittance Recorded (1/2...
help please? this was the only other information given REPORT SHEET Determination of the Solubility-Product Constant...
help please?
this was the only other information given
REPORT SHEET Determination of the Solubility-Product Constant for a Sparingly Soluble Salt EXPERIMENT 8 A. Preparation of a Calibration Curve Initial (Cro121 0.0024 M Absorbance 5 mL Volume of 0.0024 M K Cro Total volume 1. I mL 100 mL 2. 100ML 3. 10 mL 100ml 4. 15 mL 100 ML Molar extinction coefficient for [CrO2) [Cro,2) 2.4x100M 12x1044 2.4810M 3.6810M 0.04) 2037.37 0.85 1.13 2. 3. Average molar extinction coefficient...
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...
Please help I am completely confused, I included the 2
graphs needed for this post lab. Thank you!
Postlab Assignments . (a) Using your own standard curve, the line equation you generated and Beer's law equation Equation 1) calculate the molar absorpivity (e) of blue dye. For all your measurem cuvette used is 1.00 cm. Use this as the value of b in Equation 1 ents, the size of (b) Using Beer's law equation again, what does a high value...
6. (20 points) A Beer's law curve for a red food dye (max ed food dye (max = 505 nm) is shown Absorbance vs. Concentration of Red Dye Absorbance at 505nm (AU) NO NON y 1.64x R1 -0.9993 0.1 0.2 0.5 0.6 0.7 0.3 0.4 Concentration (M) The red food dye used to prepare the standard solutions for the Beer stay above is also one of the components of Strawberry Kool Aid mix. An unknown mass of Strawberry Kool-Aid mix...
Data: Consider the data below for a Beer's Law calibration curve for an aqueous orange dye solution that has 2. mx450 nm. The solutions used were translucent. The data was collected using a 1.20cm wide test tube cuvette, using 2. = 450 nm. Trial Concentration (M) Absorbance P ercent Transmittance 1 0.0030 0.153 70.3 2 0 .0060 0.312 48.8 3 0 .0090 0.465 34.3 0.0120 0.627 23.6 0.0150 0.771 16.9 For each of the following errors/changes, indicate whether a repeat...
(5 questions) Data: Consider the data below for a Beer's Law calibration curve for an aqueous orange nye solution that has mas 450 nm. The solutions used were translucent. The data was collected using a 1.20cm wide test tube cuvette, using 2 = 450 nm. Trial Concentration (M) Absorbance Percent Transmittance 1 0 .0030 0.153 70.3 0.0060 0.312 48.8 0.0090 0.465 34.3 0.0120 0.627 23.6 0.0150 0.771 16.9 For each of the following errors/changes, indicate whether a repeat of the...
questions #1-3 please
Questions. Beer's Law (1-5) The actual a value for Red 40 is 2.7 x 10 L/mole cm at 500 nm. Use this value, plus your highest absorbance reading at 500 nm, the b value of 1.0 cm and equation (1) to calculate the molarity (moles/L) of the dye. 2. The FW for Red 40 is 496 g/mole. Recalculate its concentration as g/L. Compare this value with the concentration of your original Kool Aid solution. The ratio of...
Beer lambert law. Simple Q
Can some one find the molar absorbitiy "e" for
the 1,1'-diethyl 2,2'-cyanine iodide. ( SEE DATA BELLOW
AND CALCULATIONS) and the theoretical value and explain where there
is a diffrence between them. Thank you so much.
3) Compare the experimental and literature values of ε (dye I only). Do you notice any discrepancies between these values? Dilution 1 Dilution2 Absorbance Dilution 3 Dilution 4 Dilutions 350 400 450 500 550 600 650 700 750 -0.2 Wavelength...
Page 10 Beer's Law Akuch Pyrs to shes your werk Show your work, Aplications Attach Peyes 27, what is the value of absorbance that corresponds to 35.0 %T? 28. Molar absorpt ivity is the absorptivity when concentration is in units of molarity and the gth is in centimeters. If a 1.53 x 10 M solution has an absorbance of 0.426 in a 1.00 em cell when measured at a wavelength of 254 nm, what is the molar absorptivity of the...
Need help finding equilibrium molarity
Table 1: Calibration Curve Data (4 pts. total) Tube Vol. of 0.200M Volume of Volume of Total Vol. Fe(NO3)3 0.00200M KSCN 0.500M HNO; Smi 10.5 mL 150 mL zob 20.5ml 19.98m2 J 2 5.00mL lll ML 14.05 mL 20.16 mil 5.00 ml 1.5 mL 13.5 mL 20 ml 4 5.00mL 2.0 mL 13.01 mL 20.01 mL 15 500mL I 2.50 ML 12.5 mL 20 ml Table 2: Calibration Curve Calculations and Percent Transmittance Recorded (1/2...
help please?
this was the only other information given
REPORT SHEET Determination of the Solubility-Product Constant for a Sparingly Soluble Salt EXPERIMENT 8 A. Preparation of a Calibration Curve Initial (Cro121 0.0024 M Absorbance 5 mL Volume of 0.0024 M K Cro Total volume 1. I mL 100 mL 2. 100ML 3. 10 mL 100ml 4. 15 mL 100 ML Molar extinction coefficient for [CrO2) [Cro,2) 2.4x100M 12x1044 2.4810M 3.6810M 0.04) 2037.37 0.85 1.13 2. 3. Average molar extinction coefficient...
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