Referring to the posted calibration curve ... (Image attached) A 154 g sample of a ruthenium ore was dissolved and diluted to 75.00 mL. 10.00 mL of this sample was removed, treated appropriately, and diluted to 250.00 mL. This solution has an absorbance of 0.840. Calculate the percentage of ruthenium (MW = 101.07 g/mol) in the sample. Select one: 2.10% none of the other answers are correct 1.10% 4.10% 3.10%

Referring to the posted calibration curve ... (Image attached) A 154 g sample of a ruthenium ore was dissolved and diluted to 75.00 mL. 10.00 mL of this sample was removed, treated appropriately, and diluted to 250.00 mL. This solution has an absorbance of 0.840. Calculate the percentage of ruthenium (MW = 101.07 g/mol) in the sample. Select one: 2.10% none of the other answers are correct 1.10% 4.10% 3.10%

Chemistry & Chemical Reactivity

9th Edition

ISBN:9781133949640

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Chapter4: Stoichiometry: Quantitative Information About Chemical Reactions

Section4.8: Stoichiometry Of Reactions In Aqueous Solution-titrations

Problem 2RC

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Referring to the posted calibration curve ...A 2.345 g sample of a ruthenium ore was dissolved and diluted to 100.00 mL. 4.000 mL of this sample was removed, treated appropriately, and diluted to 50.00 mL. This solution has an absorbance of 0.320. Calculate how many grams of ruthenium (MW = 101.07 g/mol) were in the sample.Select one:1.6 1.3 51 52 1.2
Referring to the posted calibration curve (image attached) ...A 2.345 g sample of a ruthenium ore was dissolved and diluted to 100.00 mL. 4.000 mL of this sample was removed, treated appropriately, and diluted to 50.00 mL. This solution has an absorbance of 0.320. Calculate how many grams of ruthenium (MW = 101.07 g/mol) were in the sample.Select one:1.6 1.3 51 52 1.2
Referring to the posted calibration curve ... A 154 g sample of a ruthenium ore was dissolved and diluted to 75.00 mL. 10.00 mL of this sample was removed, treated appropriately, and diluted to 250.00 mL. This solution has an absorbance of 0.840. Calculate the percentage of ruthenium (MW = 101.07 g/mol) in the sample.
A colored solution of concentration 0.0344 mol/L has an absorbance of 0.481. What is the concentration a solution of the same solute with an absorbance of 0.651? Assume that the same sample celf is used for both readings. Report your answer to 3 significant figures.
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