Lake phosphorus levels were determined spectrophotometrically (by reflection or transmission of light) using a molybdenum assay...

 

Transcribed Image Text:

Lake phosphorus levels were determined spectrophotometrically (by reflection or transmission of light) using a molybdenum assay (EPA Monitoring and Assessment: Phosphorus). The table below shows the absorbance results of 7 different phosphorus containing standards. Phosphorus Standard Concentration (mg/L) 0.00 1.00 2.00 3.00 4.00 5.00 6.00 Absorbance 0.109 0.246 0.440 0.645 0.789 0.943 1.095 a. Plot the data as absorbance vs concentration data using Excel or Google Sheets. b. If a sample from Lake Ontario gave an absorbance of 0.499, what is the concentration of phosphorus in the Lake? Lake phosphorus levels were determined spectrophotometrically (by reflection or transmission of light) using a molybdenum assay (EPA Monitoring and Assessment: Phosphorus). The table below shows the absorbance results of 7 different phosphorus containing standards. Phosphorus Standard Concentration (mg/L) 0.00 1.00 2.00 3.00 4.00 5.00 6.00 Absorbance 0.109 0.246 0.440 0.645 0.789 0.943 1.095 a. Plot the data as absorbance vs concentration data using Excel or Google Sheets. b. If a sample from Lake Ontario gave an absorbance of 0.499, what is the concentration of phosphorus in the Lake?