1 describe possible sources of error in this

This preview shows page 12 - 18 out of 20 pages.

1. Describe possible sources of error in this experiment.
Copyright 2021 - Science Interactive | See Graph#4 for answer, please. Questions 2 - 5 are based upon the following scenario: A testing laboratory has been hired by a company called "Drug Company Q" to analyze a series of over-the-counter drugs that the company produces. In all of these over-the-counter drugs, the active ingredient is called "Active Ingredient M." The laboratory technician collected the data from samples with known concentrations of Active Ingredient M. The data is shown below in Table 2. Table 2. Known Concentrations of Active Ingredient M Drug Sample Identification Code Sample Concentration (M) Absorbance Q5000 4.00 x 10 0.750 Q5001 3.20 x 10 0.602 Q5002 2.40 x 10 0.447 Q5003 1.60 x 10 0.299 Q5004 8.00 x 10 0.150 The technician also collected absorbance readings for 5 over-the-counter drugs for review. The data collected for the 5 over-the-counter drugs is shown in Table 3. Table 3. Absorbance Data for Over-the-counter Drugs Sample Identification Code Absorbance M21050-1 0.359 M21050-2 0.356 M21050-3 0.339 M21050-4 0.376 M21050-5 0.522 2. Create a Beer’s law plot and best fit line using the data in Table 2. Upload an image of the graph into Graph 4. -4 -4 -4 -4 -5
M21050-1: 9.76x10^-4 M21050-2: 9.85x10^-4 M21050-3: 1.02x10^-3 M21050-4: 9.41x10^-4 M21050-5: 6.73x10^-4 3. Use the Beer’s law plot and best fit line to determine the concentrations for samples: M21050-1, M21050-2, M21050-3, M21050-4, M21050-5. 4. The company reported that sample M21050-2 has an M concentration of 0.0003 M. Assuming that the results in Question 3 are 100% accurate and without error, is the company’s statement accurate? What is the percent error between the reported concentration and the concentration calculated in Question 3?
5. By law, Drug Company Q must have an M concentration between 2.85 x 10 M and 3.15 x 10 M. Do all samples analyzed meet the legal requirements? Use the information from Question 3 to explain your answer.
Copyright 2021 - Science Interactive | Graph 1: Resistance vs. Concentration
Copyright 2021 - Science Interactive | Graph 2: % Transmittance vs. Concentration Graph 3: Absorbance vs. Concentration
Copyright 2021 - Science Interactive | Graph 4: Exercise Question 2 Competency Review
Copyright 2021 - Science Interactive | 1. Water is the most universal _____.

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture