The concentration and absorbance data below were collected for compound X. A sample of compound X of unknown concentration has a corrected average absorbance of 0.6521 (three replicate measurements). Calculate the calibration sensitivity? Concentration (mg/mL) Absorbance 10 0.422 15 0.510 20 0.621 0.00567 0.045 O 0.0199 O 0.2335
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- 1. what is the conclusion of this experiment Spectrophotometric of a Cobalt Chloride Solution Analysis Table 1 Absorption Spectrum of Cobalt Chloride Using a Spectrophotometer Wavelength Absorbance 400 410 420 430 440 450 460 370 480 490 500 510 520 530 540 550 560 570 580 590 600 610 620 630 640 650 660 670 680 690 700 0.036 0.044 0.063 0.095 0.147 0.215 0.284 0.329 0.362 0.402 0.450 0.479 0.464 0.398 0.314 0.216 0.142 0.087 0.054 0.041 0.036 0.036 0.034 0.028 0.030 0.023 0.023 0.023 0.014 0.014 0.011 Test Tube Number Cobalt Chloride Concentration (mol/mL) Absorbance at 510 nm 1 0.000 0.000 2 0.009 0.042 3 0.018 0.92 4 0.027 0.139 5 6 0.036 0.045 0.190 0.236 7 (Unknown) 0.151Spectrophotometric of a Cobalt Chloride Solution Analysis 1. explain the results of the experiment Table 1 Absorption Spectrum of Cobalt Chloride Using a Spectrophotometer Wavelength Absorbance 400 410 420 430 440 450 460 370 480 490 500 510 520 530 540 550 560 570 580 590 600 610 620 630 640 650 660 670 680 690 700 0.036 0.044 0.063 0.095 0.147 0.215 0.284 0.329 0.362 0.402 0.450 0.479 0.464 0.398 0.314 0.216 0.142 0.087 0.054 0.041 0.036 0.036 0.034 0.028 0.030 0.023 0.023 0.023 0.014 0.014 0.011 Test Tube Number Cobalt Chloride Concentration (mol/mL) Absorbance at 510 nm 1 0.000 0.000 2 0.009 0.042 3 0.018 0.92 4 0.027 0.139 5 6 0.036 0.045 0.190 0.236 7 (Unknown) 0.151Spectrophotometric of a Cobalt Chloride Solution Analysis 1. explain in detail the results of this experiment Table 1 Absorption Spectrum of Cobalt Chloride Using a Spectrophotometer Wavelength Absorbance 400 410 420 430 440 450 460 370 480 490 500 510 520 530 540 550 560 570 580 590 600 610 620 630 640 650 660 670 680 690 700 0.036 0.044 0.063 0.095 0.147 0.215 0.284 0.329 0.362 0.402 0.450 0.479 0.464 0.398 0.314 0.216 0.142 0.087 0.054 0.041 0.036 0.036 0.034 0.028 0.030 0.023 0.023 0.023 0.014 0.014 0.011 Test Tube Number Cobalt Chloride Concentration (mol/mL) Absorbance at 510 nm 1 0.000 0.000 2 0.009 0.042 3 0.018 0.92 4 0.027 0.139 5 6 0.036 0.045 0.190 0.236 7 (Unknown) 0.151 Results
- Three compounds (A, B and C) are mixed together ( they are present in the same container). Molar absorptivity coefficients of these compounds at 575nm -1 -1 are: 2500, 3750 and 5250Lcm mol, respectively. Concentrations are: 2 × 10M for A, 5× 105 M for B and -6 1.5×10 M for C. What is the absorbance measured at 575mm, in 1.0cm cuvette of the solution containing all three compounds? Show your calculations.I absorbance data for your methylene blue standards and determine the slope and y-intercept using the linear model equation Y-mX+ b. Once you have appropriately set up your spreadsheet, you should be able to predict the unknown concentration of methylene blue using the absorbance data that you collected. This unknown concentration should be plotted as a separate data point on your figure (with an appropriate label in the key) and should fall along the trendline if calculated properly. ...., create a scatter plot using the concentration Your figure should include the following: O Labelled axes (including titles and units) O A raw data "line" (raw data points) O A trendline that runs through the raw data O A separate data point for your unknown concentration of methylene blue O A key that clearly identifies the data set and the unknown O Figure number O Descriptive title Your spreadshcet should also include the following (which should not be part of your figure): O Slope O Y-interceptDetermine [FeSCN²+] of the unknown in Part B using measured absorbance and the trendline of calibration curve. absorbance(x) is 0.606 trendline is y=5790.0000x+(-0.0180); R2: 0.9978
- what is the purpose y the result of Spectrophotometric of a Cobalt Chloride Solution Analysis? Table 1 Absorption Spectrum of Cobalt Chloride Using a Spectrophotometer Wavelength Absorbance 400 410 420 430 440 450 460 370 480 490 500 510 520 530 540 550 560 570 580 590 600 610 620 630 640 650 660 670 680 690 700 0.036 0.044 0.063 0.095 0.147 0.215 0.284 0.329 0.362 0.402 0.450 0.479 0.464 0.398 0.314 0.216 0.142 0.087 0.054 0.041 0.036 0.036 0.034 0.028 0.030 0.023 0.023 0.023 0.014 0.014 0.011 Test Tube Number Cobalt Chloride Concentration (mol/mL) Absorbance at 510 nm 1 0.000 0.000 2 0.009 0.042 3 0.018 0.92 4 0.027 0.139 5 6 0.036 0.045 0.190 0.236 7 (Unknown) 0.151Which data point in your standard curve is the most important in determining the best straight line 1. through your data? Why? Which is the second most important? Why? pathlength cell displays % T of 50.0 what is the Absorbance of the solution and what is the absorptivity (in /cm-mole). What Absorbance would be expected for a 5.0 x 10-6 M solution? What % T would this correspond to? 2. A solution of a light absorbing species with a concentration of 1.0 x 10-5M in a 1.0 cm1. I have problems understanding the results of this experiment, could you help me by explaining the results? Spectrophotometric of a Cobalt Chloride Solution Analysis Table 1 Absorption Spectrum of Cobalt Chloride Using a Spectrophotometer Wavelength Absorbance 400 410 420 430 440 450 460 370 480 490 500 510 520 530 540 550 560 570 580 590 600 610 620 630 640 650 660 670 680 690 700 0.036 0.044 0.063 0.095 0.147 0.215 0.284 0.329 0.362 0.402 0.450 0.479 0.464 0.398 0.314 0.216 0.142 0.087 0.054 0.041 0.036 0.036 0.034 0.028 0.030 0.023 0.023 0.023 0.014 0.014 0.011 Test Tube Number Cobalt Chloride Concentration (mol/mL) Absorbance at 510 nm 1 0.000 0.000 2 0.009 0.042 3 0.018 0.92 4 0.027 0.139 5 6 0.036 0.045 0.190 0.236 7 (Unknown) 0.151
- An unknown amount of a compound with a molecular mass of 270.57 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 enough water is added to dilute to the mark. The absorbance of this diluted solution at 355 nm is 0.495 in a 1.000 cm cuvette. The molar absorptivity for this compound at 355 nm is €355 = 6149 M-¹cm-¹. What is the concentration of the compound in the cuvette? concentration: What is the concentration of the compound in the 10 ml flask? concentration: How many milligrams of compound were used to make the 10 mL solution? mass: M M mgI need help to produce a standard curve with the attached worksheet. The curve/graph should be absorbance versus concentration.Determining the concentration of unknown solution using uv-vis spectroscopy. The absorbance vs concentration has an equation of straight line of y=8.4052x+0.0002 with r2=1. The unknown solution's absorbance is 0.150. From 75 mL sample, A 15 mL aliquot was examined. The 15 mL aliquot was mixed with 15 mL 1% percent by mass over volume HCl and was diluted to 40 mL with water. What is the concentration of the solution in the 75 mL sample?