Please refer to the graph in the lab document. If the absorbance of a solution containing FeSCN2+ is found to be 0.7500, what is the concentration of this solution? 2.6 x 10-4 M (2.6 times 10 to the minus 4th power M) O 1.0 x 10-4 M (1.0 times 10 to the minus 4th power M) O 3.0 x 10-4 M (3.0 times 10 to the minus 4th power M) O 2.0 x 10-4 M (2.0 times 10 to the minus 4th power M) O 0.7500 M O 1.6 x 10-4 M (1.6 times 10 to the minus 4th power M)

Please refer to the graph in the lab document. If the absorbance of a solution containing FeSCN2+ is found to be 0.7500, what is the concentration of this solution? 2.6 x 10-4 M (2.6 times 10 to the minus 4th power M) O 1.0 x 10-4 M (1.0 times 10 to the minus 4th power M) O 3.0 x 10-4 M (3.0 times 10 to the minus 4th power M) O 2.0 x 10-4 M (2.0 times 10 to the minus 4th power M) O 0.7500 M O 1.6 x 10-4 M (1.6 times 10 to the minus 4th power M)

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

Consider the calibration data in the table below. Construct the equilibrium concentration of FeSCN2+ if the absorbance of an unknown solution is 0.460. [FeSCN2+] (M) Absorbance 0.250 x 10-4 0.120 0.500 x 10-4 0.240 1.00 x 10-4 0.481 1.60 x 10-4 0.770 1.00 x 10-4 M 8.00 x 10-5 M 9.58 x 10-5 M 9.54 10-5 M
A 10 μL aqueous sample containing 1 attogram of Rb+ was injected into a graphite furnace atomic absorption instrument. Calculate the concentration of Rb+ atoms in ppb. The molecular weight of Rb is 85.47 g/mol. density of water = 1.0 g/mL atto = 1 x 10-18 Amazingly, the low concentration of this sample can be detected
Determination of an Equilibrium Constant Data Beer's Law constant Determination Beakers (Fe(SCN)-] Absorbance Measured OM 0.0002 M 0.00016 M 0.00012 M 0.00008 M Known 0.676 0.556 4 0.390 5 0.196 6. 0.298 Beer's Law Plot: Turn in the graph you produced in Excel The value of absorptivity constant (k) is. What is the concentration of your unknown, knowing the measured absorbance was found to be 0.298?
u/webapps/assessment/take/launch.jsp?course_assessment_id%3_148362_1&course_id%3D_147285_1&content_id%3D QUESTION 2 Which answer correctly predicts the multiplicity (the number of peaks as a result of splitting) for each shaded proton in the fe (Assume the sample contains a trace of an acidic or basic impurity and is not ultrapure) H3C-C-OH. Ha = 4, Hp = 1, Hc = 2 %3D %3D OHa = 8, Hb = 2, Hc = 2 %3D %3D OHa=7, Hb = 1, Hc = 2 %3D %3D %3D O Ha = 5, Hb = 2, Hc = 2 %3D QUESTION 3 Which spectrum would be predicted from ? (Assume coupling constants are equal. Use chemical shift and multi Ignore relative intensities.)
3. Titration: Strong Acid / Weak Base. (I warned you to be ready!) Here's the cool chart! Analyte: 20.00 mL 0.100 M Hydrazine (N₂H4) Hd A: initial Vertical (Value) Axis Title 0 B: half equivalence C: equivalence 5 10 15 20 Titrant: mL of 0.100 M HCI added 25 20.00 mL of 0.100 M hydrazine (N₂H4, pKb = 5.77) is titrated with 0.100 M HCl. a) Find the initial pH (point A) and the pH at the equivalence point (point C). b) Find the pH at the half equivalence point (point B).
Calculate the equilibrium concentration of FeSCN^2 Please explain.
Needing help with study guide. Not a graded activity
Best-fit line equation?
If the absorbance of one of the buffer solutions was 0.123 and the absorbance of the basic solution was 0.687, what is the value for the [X²]/[HX] ratio? Report your answer with 3 decimal places. Your Answer: Answer
Post-lab Question #2: Using the Kb for NH3 (from Appendix G: Kb = 1.8 x 10-5), calculate the Ka for the %3D NH4* ion. 5.6 x 10-10 1.8 x 10-10 5.6 x 10-5 1.8 x 10-5
Examine the given Beer's law standard curve for an unknown dye measured in a 1.0 cm cuvette. Absorbance of Unknown Dye at 542 nm 0.5 E 0.45 0.4 0.35 0.3 0.25 0.2 y = 15200x - 0.018. 6 0.15 * 0.1 5.00E-06 1.00E-05 1.50E-05 2.00E-05 2.50E-05 3.00E-05 3.50E-O5 Concentration (M) What is the concentration (in M) of a sample of the unknown dye with an absorbance of 0.16 at 542 nm? Type answer: ВАCK Question 8 of 8 REVIEW A «tv A O Absorbance at 542 nm
For each of the following compounds, decide whether the compound's solubility in aqueous solution changes with pH. If the solubility does change, pick the pH at which you'd expect the highest solubility. You'll find Ksp data in the ALEKS Data tab. compound KCI PbCl₂ CaCO3 Does solubility change with pH? Oyes O no O yes O NO O yes O no pH = 7 O highest solubility pH = 6 O O pH = 5 O O O B olo Ar