B D. 1 1.16E-04 0.005 2.32E-04 0.074 3 3.47E-04 0.145 4 4.63E-04 0.219 5.79E-04 0.301 6. Salicylic Acid Calibration Curve 7 8 0.35 y = 637.01x -0.0725 R2 = 0.9989 0.3 10 0.25 11 0.2 12 13 0.15 14 0.1 15 0.05 16 17 0.00E+00 1.00E-04 2.00E-04 3.00E-04 4.00E-04 5.00E-04 6.00E-04 7.00E-04 18 Concentration (M) 19 20 21 22 23 24 25 linear regression line: y = 637.01 x - 0.0725 Assume the absorbance of a student's solution containing the synthesized aspirin sample to be 0.250. Calculate the molarity of unreacted salicylic acid in the student's aspirin sample using the equation for the linear regression line. To do this, substitute the absorbance of the synthesized aspirin sample in the equation for "y" and solve for "x". Report your answer in scientific notation with 3 significant figures. Do not include the units in your answer. mol/L Absorbance

B D. 1 1.16E-04 0.005 2.32E-04 0.074 3 3.47E-04 0.145 4 4.63E-04 0.219 5.79E-04 0.301 6. Salicylic Acid Calibration Curve 7 8 0.35 y = 637.01x -0.0725 R2 = 0.9989 0.3 10 0.25 11 0.2 12 13 0.15 14 0.1 15 0.05 16 17 0.00E+00 1.00E-04 2.00E-04 3.00E-04 4.00E-04 5.00E-04 6.00E-04 7.00E-04 18 Concentration (M) 19 20 21 22 23 24 25 linear regression line: y = 637.01 x - 0.0725 Assume the absorbance of a student's solution containing the synthesized aspirin sample to be 0.250. Calculate the molarity of unreacted salicylic acid in the student's aspirin sample using the equation for the linear regression line. To do this, substitute the absorbance of the synthesized aspirin sample in the equation for "y" and solve for "x". Report your answer in scientific notation with 3 significant figures. Do not include the units in your answer. mol/L Absorbance

Appl Of Ms Excel In Analytical Chemistry

2nd Edition

ISBN:9781285686691

Author:Crouch

Publisher:Crouch

Chapter4: Least-squares And Calibration Methods

Section: Chapter Questions

Problem 1P

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