Need help with question 2 and 3 Record the apparent color of the solution.Velength and color of the light.3.4 Prepare standards: imagine that you will be preparing various dilutions of the stock solution for your solution, Theseshould include 1/4, 1/6, and 1/10 dilutions of the stock. For example, if your stock solution had a concentration of 900mM, you would use the following solutions: 900 mM (stock), 225 mM (1/4), 150 mM (1/6), and 90 mM (1/10). Note theconcentration unit listed for your stock (it may be mM or µM). Calculate the appropriate values for your solution.Move the sliding bar to the various concentrations you calculated, and record the absorbance.5.DATA TABLEStandardStandard conc.AbsorbanceCobAit L1)solution CoCla CenlorideStock conc.100mM0-51wavelength508nm1/4 conc.25 MM0.13color of light_GREEN1/6 conc.It:7MM0.08color of solution Ank1/10 conc.10 MM0.05Unknown #9Absorbance: |- 55DATA ANALYSIS – WORK ALONE1.In a physical laboratory, you would have prepared your standards by dilution of the stock solution. Pick one of yourfour dilutions, and calculate the volumes of water and stock solution you would combine to prepare 20.00 mL of thatstandard (üse the dilution equation): m,N, = MeVz(25 MM) = L10 omm) L 20.00ML)V, = 80ML2. Use the provided graph paper to construct a Beer's Law plot: absorbance versus concentration. Draw a best-fit linewith a ruler or other straight edge. Submit this graph with your other report pages. Choose two locations on the best-fit line (not data points) and calculate the slope (show your work):slope = (Y2- Y1)/(X2 – X1)3. Use the slope from #2 to calculate the concentration of your unknown: y = mx, where m = slope, and y is theabsorbance provided by your instructor:concentrationunknown #Concen TRATIONGEACAPACITYSHEET

Answered: Image /qna-images/answer/327bc98a-d6a8-4e13-b8fc-40522b197eba.jpg

Use the provided graph paper to construct a Beer's Law plot: absorbance versus concentration. Draw a best-fit line with a ruler or other straight edge. Submit this graph with your other report pages. Choose two locations on the best- fit line (not data points) and calculate the slope (show your work): slope = (Y2- Y1)/(X2 – X1) %3D TO 002)A41-55 0.002)/0002 Use the slope from #2 to calculate the concentration of your unknown: y = mx, where m = slope, and y is the absorbance provided by your instructor:

Use the provided graph paper to construct a Beer's Law plot: absorbance versus concentration. Draw a best-fit line with a ruler or other straight edge. Submit this graph with your other report pages. Choose two locations on the best- fit line (not data points) and calculate the slope (show your work): slope = (Y2- Y1)/(X2 – X1) %3D TO 002)A41-55 0.002)/0002 Use the slope from #2 to calculate the concentration of your unknown: y = mx, where m = slope, and y is the absorbance provided by your instructor:

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...

See similar textbooks

Similar questions

View Assessment ← C Pri Ter Acc X 13 minutes remaining Question 1 blackboard.matc.edu/ultra/courses/_525703_1/outline/assessment/_1556 Blank 1 X Blank 2 Blank 3 All answers must have the correct units. Watch your significant digits! A 55.0 g sample of sugar (C12H22011) is dissolved in 170. g of water. a. What is the mass of the solute? Blank 1 g b. What is the mass of the solvent? Blank 2 g c. What is the mass of the solution? Blank 3 g d. What is the percentage by mass of this solution? (% m/m) Blank 4 % Blank 4 Add your answer Add your answer Add your answer Add your answer Courses Last saved 12:59:40 PM X Questions Filter (6) ▼ + K First < Previous Next
Translate to a system of equations and solve. A scientist needs 150 milliliters of a 20% acid solution for an experiment. The lab has available a 25% and a 10% solution. How many milliliters of the 25% solution and how many milliliters of the 10% solution should the scientist mix to make the 20% solution? 25% solution 10% solution
Hello, I need help on questions 4-7 if you can answer all of them? I gave you a data table and questions you can go ahead with. And the mass of NaCI is 12 grams.
O STOICHIOMETRY OO Jada Dilution A chemist makes 510. mL of zinc oxalate (ZnC,0, working solution by adding distilled water to 300, mL of a 139. µM stock solution of zinc oxalate in water. Calculate the concentration of the chemist's working solution. Round your answer to 3 significant digits. Explhation Check 2021 McGraw H Education All Rights Reserved Terms of Use Privacy Accessibil esc Thank The & 1 2 4 6 8 9 tab W E R T Y { } P A os lock G H K V B N M < "ontrol option command command option
Concentrated Standard Solution: 3.0168 weighed mass (NH4)2SO4-FeSO4-6H2O g in L of solution 99.70 purity (NH4)2SO4-FeSO4-6H2O Volume 2.000L Diluted Standard Solution mass (NH4)2SO4-FESO+-6H2O per L of solution mg/L(or ppm)** Fe concentration (using % purity) ppm
MULTIPLE CHOICE: Choose the letter of the best answer Please answer all questions correctly 1. The standardization of volumetric solution does not require hydrochloric acid. A. Permanganometry B. Cerimetry C. Iodimetry D. lodometry E.All of the choices 2. In the standardization of its volumetric solution, the primary standard is dried to constant weight, which means drying shall be continued until two consecutive weighings do not differ by more than 0.50 mg. A. Permanganometry B. Cerimetry C. Iodimetry D. lodometry E.All of the choices 3. In the standardization of its volumetric solution, potassium iodide was added to A. Permanganometry B. Cerimetry C. Iodimetry D. lodometry E.All of the choices 4. Starch is the indicator of choice for these procedures because it forms intense blue coloration with the solution. A. Permanganometry B. Cerimetry C. Iodimetry D. lodometry E. C and D 5. In the standardization of its volumetric solution, the reaction needs to be…
Chemistry HW need help. How to do these calculation base on the data that is given？
Mass of NaCl- 2.0139g
Please help