Pre-Lab Submission #5 Part 2

Can someone help me interpret this data to be put on my research paper? This is the absorbance spectrum fo Sulfamethoxazole (sulfonamide antibiotic). Thank you so much!

please please im begging please please answer images attached super super super fast i really need it before 11:40pm today please answer fast i would really appreciate it

Please do questions 2 and 3. Dont do it all, just show me how to solve one and I will do the rest.

3. If you wished to study the molecule below by measuring absorbance, what wavelength should you set your spectrophotometer to? 1.6 Absorbance 1.4 1.2 1.0 0.8 0.6 0.4- 0.2- ME 0.0 300 400 600 Wavelength (nm) 500 Solutions and Mol....pdf 2 700 20221027_141317.jpg 800

Just part b!!!

Arkansas Tec x O Mail - Jackson Illingworth - Outlo 2 Content https://bblearn.atu.edu/ultra/courses/ 32419 1/cl/outline * Question Completion Status: QUESTION 26 A student uses her absorbance data on dilutions of a dye to create the graph below. 0.60 0.50 0,40 0.30 0.20 0.10 0.020 0.040 0.060 0.080 0.10 Concentration (M) If the absorbance of the unknown solution is 0.275, what is the concentration of the solution? O a. 0.075 M O b.2.75 x 10-3 M O c. 0.050 M O d. 0.025 M QUESTION 27 Why is it generally preferable to use absorbance as a measure of sample absorption rather than % transmittance? O a. absorbance is proportional to the concentration of the analyte, whereas %T is not O b. %T is dependent on the power of the incident radiation O c. %T cannot be measured as accurately as absorbance O d. most commercially available silicon detectors are not as sensitive to %T ch 38% Absorbance

A 0.1 g amine-containing compound is dissolved in water then diluted to 100 mL. To get the concentration of amine in this compound, you subject it to spectroscopic analysis. So, you get 1 mL of the previously diluted sample then dilute it again to 250 mL for measurement. Then, you fill 3/4 of a 1-cm cuvette with this diluted sample then you run an analysis using an AAS. The recorded absorbance is 0.545 at 410 nm. Solve for the molecular weight of the compound. The molar absorptivity is 1.23 x 104 cm-1 mol-1 L.

Please answer all and post below the answer the source from where you got the answer thank you!

Sample #1 has an absorbance of 0.300. Sample #2 is the same substance and has an absorbance of 0.600 using the same equipment. What is the relative concentration of the second sample? Select one: a. The concentration of sample #2 is the square root of that of #1. b. The concentration of sample #2 is that of sample #1 squared. c. The concentration of sample #2 is half that of sample #1. d. The concentration of sample #2 is twice that of sample #1.

How did you decide on the wavelength at which you will read the absorbance of the diluted solutions? What is the importance of reading the absorbance of diluted solutions at λmax? What will vary if you chose a wavelength 20 nm lower or higher than your chosen wavelength? (Minimum of 8 sentences)

4. Determine the percent transmittance of ß-carotene, C40H56 that has an absorbance of 0.5 when analyse using a UV-Visible spectrophotometer. A. 6.83% B. 31.6% C. 0.32% D. 68.3% 5. The equation of Beer Lambert's Law is A = abc. If the 'b' is distance, 'a' is absorptivity, and 'A' is absorbance, what does the 'c' represent? 7. A. Intensity B. Analyte concentration C. Analyte transmittance D. Frequency 6. All the following is an example of photon detectors EXCEPT: A. Vacuum phototube B. Silicon photodiodes C. Bolometers D. Photomultiplier tubes C=0 bond stretch occurs at 1750 cm¹ and C-O stretch occurs at 1100 cm¹ because: A. The C-O has a single bond which is a stronger bond, so it vibrates at a higher frequency than the C=O. B. The C-O has a single bond which is a stronger bond, so it vibrates at a lower frequency than the C=O. C. The C=0 has a double bond which is a stronger bond, so it vibrates at a lower frequency than the C-O. D. The C-O has a double bond which is a stronger bond,…

The wavelength of maximum absorbance of methyl red is closest to ___.   Question 20 options:   570 nm   617 nm   431 nm

I need help pls

The concentration and absorbance data below were collected for compound X. A sample of compound X of unknown concentration has a corrected average absorbance of 0.5621 (3 replicate measurements). Calculate the y-intercept. CONCENTRATION (mg/mL) ABSORBANCE 5 0.422 10 0.510 15 0.621 a. 0.299 b. 0.222 c. 0.319 d. 0.553

Sally obtains a standard calibration curve for their assigned food dye by plotting absorbance versus concentration (in M) of known solutions and finds the following slope and intercept:   y = 1.646x + 0.026   Note: Copying and/or posting this or other questions without the express written permission from Dr. Burke and the Department of Chemistry & Biochemistry at the University of Delaware is a violation of intellectual property copyright law.   Sally finds that her original Kool-aid sample is too concentrated, so they dilute it by transferring 13.00 mL of the original Kool-aid sample into a new container and diluting to a total volume of 37.00 mL. If the absorbance of the dilute Kool-aid sample at the appropriate wavelength for their assigned dye is 0.950, determine the concentration (in M) of the assigned food dye in the original Kool-aid sample. Report your answer with three places after the decimal.

How will you use a solution of known concentration of one of the food dyes to determine the relationship between concentration and absorbance? Be sure to explain how you determined the wavelength for your analysis.

Question 4 What is the correct order of the components in a UV-Visible spectrophotometer? A) Sample Light source →→ Monochromator→ Photodetector B Light Source →→→ Sample → Monochromator→ Photodetector C Light source → Sample Photodetector → Monochromator D Light Source →→→ Monochromator→ Sample Photodetector Continue

PLEASE show steps in your calculations

How does pipetting laboratory techniques affect absorbance values when using UV-Vis Spectrophotometry?

4. Beer's Law states that absorbance of a compound is directly proportional to the log of the concentration of the absorbing species. * True False

Absorbance 1.40 Beer's Law Plot 1.20 1.00 0.80 0.60 0.40 0.20 0.00 0 10 20 30 40 50 Concentration (M x 105) D The slope for the line is 80.23. Use the Beer's Law plot provided to determine the concentration for a solution with absorbance = 0.5786. M

1

please please answer super fast i need it before 9:30pm please answer all

10. The concentration of haemoglobin in a blood sample was determined by spectrophotometry. A standard curve of the absorbance at 412 nm of several solutions of known haemoglobin concentrations was created. The data for the standard curve is shown below. a. Calculate the linearity coefficient (r), y-intercept and slope. b. What is the concentration (in ug/mL) of haemoglobin in your sample if the absorbance obtained at 412 nm was 0.303? Absorbance Concentration of standard solution (pg/ml) (412nm) 0.069 1 0.113 2 0.201 4 0.377 8. 0.730 16

The two spectra below correspond to 2-butanol (CH3CH2CH(OH)CH3) its isomer, 2-methyl-1-propanol ((CH3)2CHCH2OH).  Draw these two isomers, and assign the correct spectrum to each isomer.  Explain what spectral data you used to reach your conclusion.

A protein’s concentration can be determined spectrophotometrically by mixing it with an indicator called a Bradford reagent and measuring the amount of light absorbed by the protein. Use the plot below to determine the mass of protein (in micrograms, μμg ) in 100.0 mL of the solution if its absorbance is 0.398. A.  52 B.  3.1 C.  2.4 D.  0.52 E.  0.031

What would be a reasonable guess for the wavelength of maximum absorbance for FD&C Orange 2?   Note: Copying and/or posting this or other questions without the express written permission from Dr. Burke and the Department of Chemistry & Biochemistry at the University of Delaware is a violation of intellectual property copyright law. What would be a reasonable guess for the wavelength of maximum absorbance for FD&C Orange 2?   Note: Copying and/or posting this or other questions without the express written permission from Dr. Burke and the Department of Chemistry & Biochemistry at the University of Delaware is a violation of intellectual property copyright law. 400-450 nm 450-480 nm 480-560 nm 560-590 nm 590-630 nm 630-700 nm

1.give some precautionary measures in the use of microscope 2.List the part of the microscope and give its function 3.definition of patrol 4.history of traffic 5.Early mode of transportation

em1.png chem3.png Part 3: Q9 Average absorbance Flask 8 Flask 9 Flask 10 Flask 11 Part 3: Q9 Flask 8 Flask 9 Flask 10 Flask 11 Part 3: Q10 Flask 8 Flask 9 Flask 10 Flask 11 Q Part 3 0.146 [Fe] -0.002mol/L 0.166 volume 5.00mL 0.215 0.294 [FESCN mol/L) ✪ 4.59* 10 5.18*10* 6.64 x 10 9.08*10* [Fe(mol/L) 5.00 x 10 5.00*10* Y=3362x -0.0083 R¹ 0.9993 5.00 x 10 5.00*10* (Amounts of flask 8 (9 - 11's values are in the spreadsheet) 1:1 Ratio so, Molarity of Fe(NO3))3 = 0.2M Volume of Fe(NO3))3 = 5.00mL 71% Moles of Fe³= Molarity x volume(L) Moles of Fe = 0.2M × 0.005L = 1× 10-³mole 68% [SCN ](mol/ 4 x 10-4 5 x 10-4 7*10* 1*10* الخا chem2.png Concentration of Fe³ 9, X = mole of Fe³1x10³ mole Volume 0.0054 Ⓒ 8, Average absorbance for solution 8 (same for 9 - 11) Average absorbance for flask 8 = sum of all absorbances / number of readings (0.145 +0.147 +0.148) 3 Using equation of calibration curve's line(slope) of best fit, the average absorbances of the unknown concentrations to determine…

explain in detail.

Question 44 Which of the following statements are true for chemical interference? I. Releasing agents are added to the sample to reduce chemical interference. II. Chemical interference occurs when a component of the sample reduces the extent of atomization of the analyte. III. Higher temperature flames will reduce chemical interference. IV. Chemical interference occurs when a component of the sample emits light at or close to the same frequency as the analyte. V. Releasing agents will preferentially react with the analyte, protecting the analyte from components of the sample that will ionize the analyte. O A. II, IV, and V B. I, II, and IV OC.I, II, and IV O D.I, II, and III