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ㅁ Question 9 1.5 pts A researcher wants to determine the concentration of beta-carotene in carrots. She obtains a 0.455 M stock solution of beta-carotene and creates Dilution A by transferring 30.00 mL of stock solution into a new container and diluting it with solvent to a final volume of 83.00 mL. She creates Dilution B by transferring 52.00 mL of stock solution into a new container and diluting it with solvent to a final volume of 92.00 mL. She creates Dilution C by transferring 8.00 mL of Dilution B into a new container and diluting it with solvent to a final volume of 18.00 mL. She measures the absorbance of each solution and obtains the values below. Plot the data in a spreadsheet software and determine the best-fit line. What is the slope of the best-fit line? Report your answer with three places after the decimal. Absorbance Solution Stock solution 0.921 Dilution A 0.266 Dilution B 0.57 Dilution C 0.183 Note: Remember to draw a dilution diagram! The best-fit line will likely look atrocious, since this is completely fictitious data.

ㅁ Question 9 1.5 pts A researcher wants to determine the concentration of beta-carotene in carrots. She obtains a 0.455 M stock solution of beta-carotene and creates Dilution A by transferring 30.00 mL of stock solution into a new container and diluting it with solvent to a final volume of 83.00 mL. She creates Dilution B by transferring 52.00 mL of stock solution into a new container and diluting it with solvent to a final volume of 92.00 mL. She creates Dilution C by transferring 8.00 mL of Dilution B into a new container and diluting it with solvent to a final volume of 18.00 mL. She measures the absorbance of each solution and obtains the values below. Plot the data in a spreadsheet software and determine the best-fit line. What is the slope of the best-fit line? Report your answer with three places after the decimal. Absorbance Solution Stock solution 0.921 Dilution A 0.266 Dilution B 0.57 Dilution C 0.183 Note: Remember to draw a dilution diagram! The best-fit line will likely look atrocious, since this is completely fictitious data.

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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ㅁ Question 9 1.5 pts A researcher wants to determine the concentration of beta-carotene in carrots. She obtains a 0.455 M stock solution of beta-carotene and creates Dilution A by transferring 30.00 mL of stock solution into a new container and diluting it with solvent to a final volume of 83.00 mL. She creates Dilution B by transferring 52.00 mL of stock solution into a new container and diluting it with solvent to a final volume of 92.00 mL. She creates Dilution C by transferring 8.00 mL of Dilution B into a new container and diluting it with solvent to a final volume of 18.00 mL. She measures the absorbance of each solution and obtains the values below. Plot the data in a spreadsheet software and determine the best-fit line. What is the slope of the best-fit line? Report your answer with three places after the decimal. Absorbance Solution Stock solution 0.921 Dilution A 0.266 Dilution B 0.57 Dilution C 0.183 Note: Remember to draw a dilution diagram! The best-fit line will likely look atrocious, since this is completely fictitious data.
Transcribed Image Text:ㅁ Question 9 1.5 pts A researcher wants to determine the concentration of beta-carotene in carrots. She obtains a 0.455 M stock solution of beta-carotene and creates Dilution A by transferring 30.00 mL of stock solution into a new container and diluting it with solvent to a final volume of 83.00 mL. She creates Dilution B by transferring 52.00 mL of stock solution into a new container and diluting it with solvent to a final volume of 92.00 mL. She creates Dilution C by transferring 8.00 mL of Dilution B into a new container and diluting it with solvent to a final volume of 18.00 mL. She measures the absorbance of each solution and obtains the values below. Plot the data in a spreadsheet software and determine the best-fit line. What is the slope of the best-fit line? Report your answer with three places after the decimal. Absorbance Solution Stock solution 0.921 Dilution A 0.266 Dilution B 0.57 Dilution C 0.183 Note: Remember to draw a dilution diagram! The best-fit line will likely look atrocious, since this is completely fictitious data.
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