Calculating Radionuclide (243 Am3+) in a solution

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SUMMARY

The discussion centers on calculating the concentration of 243Am3+ in a solution of 1 M HClO4 using UV-Visible spectroscopy. The absorbance measured at 500 nm is 0.35, with a path length of 1 cm. The participant attempted to use the equation A = ebC to find the molar absorptivity but realized that their calculations were incorrect, as they yielded the same concentration for Am as for HClO4. The consensus is that additional information is necessary to accurately determine the concentration of 243Am3+.

PREREQUISITES
  • Understanding of UV-Visible spectroscopy principles
  • Familiarity with the Beer-Lambert Law (A = ebC)
  • Knowledge of molar absorptivity and its significance
  • Basic chemistry concepts related to solutions and concentrations
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  • Research how to determine molar absorptivity for 243Am3+
  • Learn about the effects of solvent concentration on absorbance measurements
  • Investigate methods for calculating concentrations from absorbance data
  • Explore advanced UV-Visible spectroscopy techniques for complex solutions
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Chemistry students, laboratory technicians, and researchers involved in analytical chemistry and spectroscopy who need to calculate concentrations of radionuclides in solutions.

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Homework Statement


There is an UV-Visible experiment on 243Am3+ in 1 M HClO4 with a 1 cm path length
cuvette and a total volume of 2.5 mL. The absorbance near 500 nm is 0.35. What is the solution concentration of Am

Homework Equations


A = ebC

A = absorbance
b = path length
C = concentration
e = molar absorptivity

The attempt at a solution
I first calculated the molar absorptivity using the absorbance, concentration of 1M HCLO4 and the path length and right off the bat, I knew that this method is wrong (e=0.35, same as the abs reading). I then use the A=ebC equation, but then again this method is wrong because it gave me the same concentration of Am to the concentration of HCLO4. Please help guiding me through this problem.
 
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There is not enough information to solve the problem as stated.
 
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