(Q24) What is the uncertainty in the concentration of nucleic acid present in a sample given an absorbance reading of 0.974 (±0.007) and using a cuvette with a path length of 1.00 +0.02 cm? The molar extinction coefficient for the nucleic acid is 0.5866 cm¹ uM¹. (Four decimal places, you don't need to include the +/-sign) Beer's Law: A = sbc A = absorbance (no units) = molar extinction coefficient b = path length c = concentration (here, μM)

(Q24) What is the uncertainty in the concentration of nucleic acid present in a sample given an absorbance reading of 0.974 (±0.007) and using a cuvette with a path length of 1.00 +0.02 cm? The molar extinction coefficient for the nucleic acid is 0.5866 cm¹ uM¹. (Four decimal places, you don't need to include the +/-sign) Beer's Law: A = sbc A = absorbance (no units) = molar extinction coefficient b = path length c = concentration (here, μM)

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

A MALDI-TOF spectrum was obtained for a fragment of the neuropeptide ACTH: Arg-Pro-Val-Lys-Val-Tyr-Pro-Asn-Gly-Ala-Glu-Asp-Glu-Ser-Ala-Glu-Ala-Phe-Pro-Leu-Glu-Phe It's monoisotopic mass [M] = 2462.198 These cations have the following monoisotopic masses: H* = 1.00 Nat = 22.99 K* = 39.10 Calculate the [M+H]* peak for ACTH, round your value to the nearest whole number.
26
1. What is the specific rotation of glucose(MW 180) with a density of 1.56g/mL and an angular rotation of +1.24° in a 1dm tube? 2. A 10.0% Atropine solution was analyzed using a polarimeter in a 2 dm tube, the reading from the polarimeter was +1.22° and the solvent alone is +1.20°, calculate its specific rotation. 3. An Aspirin solution was placed in an oven at 60°C. The absorbance was taken every month for 3 months. The kinetic profile equation is y= -0.0165x – 1.205. If Aspirin was manufactured November 26, 2021, what is its expiration date?
) Why do most long-chain fatty acids show a large peak in the mass spectrum at m>z 60?
Identify the key fragment structures of 4'-Bromoacetophenone based on the peaks of its attached mass spectrum.
✓ 1 ✓2 Try again Recheck ✓ 3 ✓ 4 O Draw the most stable cations formed in the mass spectrometer by a cleavage of the following com ✓ 5 :0 = 6 7
Given the Ka values, estimate the pKa value of each of the following acids without using a calculator (that is, is it between 3 and 4, between 9 and 10, and so on?):
Need help, please. Not too sure if my answer is correct.
Question 1
Search the literature for an example of a small molecule that has been identified using mass spectrometric techniques a large biomolecule that has been sequenced using mass spectrometric techniques. Describe the isolation (separation) and identification (which ionization source, mass analyzer, and mass detector) techniques were used. Include a summary of the fragmentation pattern (especially how the molecular peak has been identified) for each compound.
2
(5): The pKa of HF is 3.167. What is Kb for F¯ ?