Helen performed an experiment with KMNO4 at 520 nm. Given the percent transmittance of 5 ppm KMNO4 using a 1 cm cuvette is 86 %. Calculate the molar absorptivity of KMNO4 (158.03 g/mol) at this wavelength.

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A: From the graph given, we can see that the best fitter line equation is given as  Y = 15200 X - 0.018…

Q: A 2.845 g sample of an unknown compound containing cobalt(II) ion was dissolved in water in a 250 mL…

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A: Spectrometer uses the beers lamberts law.  And it measures the absorbance of the sample.

Q: 1. A compound has a molar absorptivity of 3.031 x 103 L cm-1 mol1. If a 15.00 mm-length cell is used…

A: We know that  A = 2 - log(%T) and A = € × C × l

Q: Which of the following is NOT a detector used with HPLC?

A: Light Scattering Detector:  Light scattering detection does not require analytes to have…

Q: 6 A solution containing 4.48 ppm KMnO4 exhibits 85.9% transmittance in a 1.00 cm cell at 520 nm.…

A:

Q: (A) Suppose a solution contains 0.01 M Fe, has a transmittance of 60 % in a 1 cm cell at 625 nm, The…

A: Absorbance = 2 - log(%T) Also, Absorbance = Molar absorbtivity coefficient × Concentration × Path…

Q: 1. A 10.0 mL sample of a diluted solution has a transmittance of 25.1%. Determine the connection of…

A: The question is related to absorbance based on beer lambert's lawA= ε c L; c=concentration; L=…

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Q: 70 105 140 Mass M/e 175 21 1.1 1.0 0.9 0.8 0.7 what functional graups arepresent? 0.6 0.5 0.4 0.3…

A: The answer is given as follows  There is C=O functional group in this spectrum

Q: A 4.75 mg/L Co (FM = 58.93) solution has a percent transmittance of 19.2 % in a 1.00 cm cell at 635…

A:

Q: A solution containing 5.75 mg/100 mL of X (335 g/mol) has a transmittance of 41.6% in a 2.0 cm cell…

A: Given,  A solution containing 5.75 mg/100 mL of X (335 g/mol) has a transmittance of 41.6% in a 2.0…

Q: A sample of a colored analyte at a concentration of 3.60 ´ 10-3 mol/L shows 34.2 percent…

A: #(a): Given the concentration of the analyte, C = 3.60*10-3 mol/L or M %T = 34.2 %

Q: b) Helen performed an experiment with Fe(SCN)²+ complex at 580 nm. Calculate the percent…

A: Given: concentration of Fe(SCN)2+, c = 4.47 x 10-5 M length of cuvette = 1 cm  molar absorptivity, ε…

Q: A solution containing 4.48 ppm KMnO, had a % transmittance of 30.9% in a 1.00 cm cell at 520 nm.…

A: Given data contains, Concentration in ppm is 4.48 ppm. Pathlength is 1.00 cm . Transmittance is…

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A:

Q: Examine the given Beer's law standard curve for an unknown dye measured in a 1.0 cm cuvette.…

A: Answer is explained below. According to Beer's law we know that, A = ε×C×l ; where, A = absorbance…

Q: A solution containing 6.94 x 108 M CrQ3 (Q = 8-hydroxyquinolate ion) has a percent transmittance of…

A: The given problem can be solved by using the formula given below as; A=εCl =-log T…

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Q: 5. The transmittance of a solution is found to be 85.0% when measured in a cell whose path length is…

A:

Q: Indicate the relationship of proportionality that exists between: a) concentration and absorbance…

A: Applying concept of Beers law.

Q: A solution of KMNO, with a concentration of 8.25 x 10° M yields an absorbance value of 0.1302 when…

A:

Q: A 4.48 mg sample of a compound has a molar mass of 158.03 g/mol was dissolved in a 1000 mL…

A: Mass of compound, wB = 4.48 mg Molar mass, MB = 158.03 g/mol Volume of solution, V = 1000 mL…

Q: A particular food coloring has a molarabsorptivity of 3.8*10 3 cm -1 M -1 at 510nm. What will be the…

A: Please have a look on the answer given below:

Q: Chemisu y I LaDoluur) The following data were collected at 640 nm for a certain food coloring agent.…

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A: Lambert- Beer's law equation to plot a graph and calculate the concentration A = mC + b Where A =…

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A: (a) Potentiometry :…

Q: Please provide a clear solution for the following question: Titanium is reacted with hydrogen…

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A: Transmittance- It can be expressed as the ratio of transmitted intensity (I) to the incident…

Q: Examine the given Beer's law standard curve for an unknown dye measured in a 1.0 cm cuvette.…

A:

Q: A mixture solution of Co(II) and Ni(II) shows an absorbance of 0.500 at 500 nm. What percentage of…

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Q: Could a percent transmittance reading of 0.00 be used in calculations.? Yes or no and explain why.

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Q: undiluted 0.715 1:4 dilution ratio 0.447 1:9 dilution ratio 0.321 a. Calculate the slope,…

A: First plot the graph of absorbance vs concentration . Then find the equation for graph using Excel.

Q: Examine the given Beer's law standard curve for an unknown dye measured in a 1.0 cm cuvette.…

A: According to Beer's Law, A = (εl).c   For a graph between A (Absorbance) and c (concentration),…

Q: 13. The transmittance of a solution measured at 590 nm in a 1.5-cm cuvette was 76.2%. (a) What is…

A:

Q: 100 ml of a solution contains 0.050 g of a coloured compound that absorbs exactly half the incident…

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Q: Calculate the molar absorptivity and absorbance of a 1.00 x 104 M solution, which has a…

A:

Q: Examine the given Beer's law standard curve for an unknown dye measured in a 1.0 cm cuvette.…

A:

Q: a) You measure the percent transmittance of a solution containing chromophore X at 400nm in a 1-cm…

A: From data T%= 50%, so, T= 0.5  l = 1 cm   c = 0.5mM= 0.0005M A1 = 0.2 A2 = 0.8 Furthermore, molar…

Q: QUESTION 25 A student finds the percent transmittance and the absorbance of a 0.10 M solution at…

A: This question is related to spectrophotometry. Absorbance is the amount of light absorbed by a…

Q: A solution containing 3.75mg/100 ml of analyte (X) 220 g/mol has a transmittance of 39.6% in a 1.00…

A: It is an application of Lambert Beer law  Here we are required to find the molar absorptivity and…

Q: 4. The transmittance of a solution is found to be 35.0%. What is the transmittance if the solution…

A: Given-> Transmittance (T%) = 35.0 %. When C1= C

Q: 1. Which following statement is NOT correct for Matrix-Assisted Laser Desorption/Ionization (MALDI)…

A: 1) C. Matrix materials is not applied for biomolecules with laser wavelengths 2) B. requires that…

Q: The following data have been obtained in the calibration of a series of standards for the…

A: Please have a look on the solution :