Calculating Radionuclide (243 Am3+) in a solution

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The discussion revolves around calculating the concentration of 243Am3+ in a solution using UV-Visible absorbance data. The absorbance at 500 nm is recorded as 0.35, with a path length of 1 cm and a total volume of 2.5 mL in a 1 M HClO4 solution. Initial attempts to determine molar absorptivity led to incorrect conclusions, as the calculated value equaled the absorbance. The user seeks guidance, indicating that the problem lacks sufficient information to arrive at a definitive solution. Clarification on the necessary data or methodology is requested for accurate concentration calculation.
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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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