A student prepares a solution of his dye and measures its absorbance using a 1 cm cuvette. The absorbance is 0.45 and the concentration of the solution is 4.2 * 10-5 M. Determine the molar extinction coefficient at this wavelength (Integer only)

A student prepares a solution of his dye and measures its absorbance using a 1 cm cuvette. The absorbance is 0.45 and the concentration of the solution is 4.2 * 10-5 M. Determine the molar extinction coefficient at this wavelength (Integer only)

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

Related questions

Q: Extinction coefficient of a dye is 7200 M-1 cm-1. Assuming a path length of the cuvette to be 1 cm,…

A: Extinction coefficient (ε) = 7200 M-1cm-1Path length (l) = 1 cmAbsorbance (A) = 0.300 Concentration…

Q: What is the

Q: Absorbance 05 0.45 04 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 200 Absorption Spectrum of CoCl₂(aq) 300 400…

A: Beer lambarts says that the absorbance is directly proportional to concentration.A = ecle :…

Q: absorbance of a sample is 0.521, what is its concentration?

Q: A: Find the concentration of a solution, the path length (1.5 cm),the molar absorption coefficient…

A: Path length = 1.5 cmAbsorption coefficient = 0.95 cm3mol-1cm-1Absorbance = 0.8

Q: Calculate and report the energy, in units of joules, associated with each absorbance maximum.

A: We have to calculate the energy in joules of the given absorption maxima. The given absorption…

Q: Tryptophan absorbs at a maximum wavelength of 280 nm. In a cuvette (1 cm-optical path length), a 200…

A: The answer for this problem is provided below in great details within the attached figure.

Q: Absorbance. 0 Mg Cr 2.5 Height, cm Ag 5.0

A: The observations in the graph suggest that a different portion of the flame should be used for the…

Q: A 25.0 mL aliquot was taken from a 500.0 mL sample of tonic water containing an unknown amount of…

A: Volume of original sample = 500.0 mLVolume of aliquot taken from original sample = 25.0 mLVolume…

Q: 7. The reduced form of nicotinamide adenine dinucleotide (NADH) is an important and highly…

A: "Since you have asked multiple questions, we will solve one question (Ques 7) for you. If you want…

Q: What is the molar concentration for a solution with a measured absorbance of 0.212 based on this…

A: According to Beer-Lambert’s law, the absorbance of solution can be expressed as:

Q: If the absorbance of 0.291 M copper (II) chloride solution is 0.497 and the path length of light is…

A: According to Beers Lambert Law- A=ε.l.cwhereA-Absorbanceε-molar extinction coefficientl-path lenght…

Q: Starting with the rate constant from your graphs and the NaOH concentrations, show haw you…

A: For a zeroth-order reaction, a plot of the concentration of any reactant versus time is a straight…

Q: What information is needed to determine the concentration of an unknown sample using spectroscopy?…

A: The concentration of some unknown compound is done using UV spectroscopy with the help of…

Q: The extinction coefficient for FD&C Blue Dye #1 is 138,500 cm-L/mol at 630 nm. A chemist collected…

Q: The absorbable of a solution is measured to be 0.806. If the path of the curvette is 1.07 cm, and…

Q: You are given a green solution. Sketch the two possible UV-vis spectra that could result from the…

A: Green colour can arise due to absorption close to both 400 nm and 800 nm. Hence, we can observe two…

Q: Time (min) A 0 0.617 10 0.536 20 0.456 30 0.375 40 0.294 50 0.214 60…

A: Using Beer-Lambert LAw, A= εb * c where A= absorbance, c=concentration (mol/L), ε = molar extinction…

Q: The extinction coefficient for FD&C Blue Dye #1 is 138,500 cm-L/mol at 630 nm. A chemist collected…

A: A question based on quantitative analysis, which is to be accomplished.

Q: For the experiment this week, you'll use the relationship between FeSCN2* absorbance and…

Q: What is the extinction coefficient for the following absorbances? 1. 3.000 2. 2.022 3.1.2025 4.…

A: The objective of the question is to calculate the extinction coefficient for the given absorbances…

Q: For one of your trials during the equilibrium experiment at room temperature as described in the lab…

A: To find out the equilibrium constant for the following reaction Fe3+(aq) + SCN-(aq) ⇌…

Q: What is the Molar Absorption Coefficient for Fe(SCN)2+ (M/cm) if the path length of vial is 2.24cm…

A: In the given question we have to calculate the molar absorption coefficient of Fe(SCN)2+ by the…

Q: Do read carefully and answer accordingly Chlorophyll a (a plant pigment) has the following molar…

Q: Part 1. Construction of a Calibration Graph 1. In a table, present the concentrations of FeSCN²+…

A: The aims is to construct a calibration graph for the complex formed between iron (Fe), thiocyanate…

Q: Q/ If the intensity of the transmitted ray is equal to 0.12 of the intensity of the incident ray on…

A: Given that - Intensity of transmitted ray = 0.12 Thickness = 2 cm Molar absorbance coefficient =…

Q: difference with UV single beam vs double beam and how does it affect absorbance?

A: In a single beam spectrophotometer absorbance at some certain fixed wavelength is recorded to known…

Q: An absorption measurement with a 1 cm path length yields a reading of 0.004 absorbance units with a…

A: The signal-to-noise ratio (SNR) is a measure of the strength of the signal relative to the…

Q: 5. A solution of certain dye has a calibration graph shown below when measured at 425 nm in 1.00cm…

A: Answer Using the Beer's lambert law The dye concentration at absorbance of 0.733M The equation of…

Q: Calculate the absorbance for a solution containing a colored species with a percent transmittance…

Q: After analyzing the table, is the maximum absorption wavelength related to the polarity of the…

A: Polar molecules have a high dielectric constant. So in general, the higher the polarity, the higher…

Question

A student prepares a solution of his dye and measures its absorbance using a 1 cm cuvette. The absorbance is 0.45 and the concentration of the solution is 4.2 * 10^-5M. Determine the molar extinction coefficient at this wavelength (Integer only)

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Similar questions

Zinc (Zn) Calibration Curve 0.070 0.060 0.050 0.040 0.030 0.020 0.010 0.000 0.0000 0.0010 0.0020 0.0030 0.0040 0.0050 0.0060 0.0070 [Zn] (M) Estimate the concentration (in M) of an unknown Zn sample that has an absorption of 0.025. 0.0050 Absorbance
A molecule has an absorption cross-section of 0.64- dm mol-cm What is the extinction coefficient in the same units? 0.28 1.28 0.36 1.47
Given the following size frequency for a dust: Size Interval (um) 7-17.5 17.5-21 21-25 25-28 28-30 30-33 33-36 36-41 41-49 49-70 % by Number 10 10 10 10 10 10 10 10 10 10 a. Plot the cumulative frequency distributions (in %) of the number, surface area, and mass on linear graph paper assuming all particles are spheres with Pp 1.6 g cm ³. = b. Is this a log-normally distributed dust?
PLEASE ANSWER ASAP
The Beer’s Law plot of the standard curve for the equilibrium experiment was determined by plotting? absorbance versus [Fe3+] absorbance versus % transmittance % transmittance versus [FeSCN2+] absorbance versus [FeSCN2+]
Please help
You obtain the following calibration curve. Concentration versus Absorption of Iron 14 y = 211.86x R = 0.9753 1.2 0.8 0.6 0.4 0.2 0.001 0.002 0.003 0.004 0.005 0.006 0.007 Concentration (M) Using the equation from the calibration curve, determine the concentration of iron in your substance when your substance has an absorbance of 0.704. Report your answer to four decimal places. Do not use scientific notation (Canvas will not accept letters in a numerical answer) and do not include units in the answer. Absorption
What is the molar extinction coefficient at 625 nm for this copper (II) acetate solution? How was it determined? Standard Solution Concentration (M) Absorbance 1 0.025 0.049 2 0.050 0.153 3 0.100 0.242 4 0.200 0.499 5 0.250 0.694
There is a substance in a solution (8 g/liter). The length of cuvette is 2 cm and the extinction coefficient is 0.0376 M-1 cm-1, how much is the beam of light is transmitted?
Using beer lambert's law: A= e.c.l ( l is the path length=1cm) determine the extinciton coeffiecient from the absorbance vs concentration graph.
Do in 2 min. I will give u like
4 of 15 Abs 2.0 1.5 1.0 0.5 0.25 0. 0.2 0.4 0.6 Concentration (M) With reference to the UV-Vis calibration curve reported above, calculate the concentration (Molar) of a sample whose Absorbance is 1.0. Report your answer with two significant figures.