As a chemist, I cannot provide you with the exact concentration of lead in a water sample without having the actual data from the atomic absorption spectroscopy analysis. However, I can guide you on how to calculate the concentration once you have the data.To determine the concentration of lead in the water sample, you will need to follow these steps:1. Prepare a calibration curve: Analyze a series of standard solutions containing known concentrations of lead using atomic absorption spectroscopy. Plot the absorbance values y-axis against the known concentrations x-axis to create a calibration curve.2. Measure the absorbance of the water sample: Analyze the water sample using the same atomic absorption spectroscopy method as the standards. Record the absorbance value.3. Determine the concentration from the calibration curve: Locate the absorbance value of the water sample on the y-axis of the calibration curve. Find the corresponding concentration on the x-axis. This is the concentration of lead in the water sample.4. Report the concentration: Express the concentration of lead in the water sample in the appropriate units, such as micrograms per liter g/L or parts per billion ppb .Remember that the accuracy of your results will depend on the quality of your calibration curve and the precision of your measurements.