Concentration is the amount of a substance in a given volume of solution. It can be calculated using Beer's Law, which relates absorbance to concentration.
The formula to calculate concentration from absorbance is:
\[ c = \frac{A}{\epsilon \cdot l} \]
Consider the following details:
Using the formula:
\[ c = \frac{0.5}{100 \cdot 1} = 0.005 \, \text{mol/L} \]