Transcribed Image Text: The nitrite in a series of standard solutions (mg/L, n = 5) are converted to azo dye and the slope of the calibration curve is 2.0 ppm.

Transcribed Image Text: The nitrite in a series of standard solutions (mg/L, n = 5) are converted to azo dye and the slope of the calibration
curve is 2.0 ppm. A 10.00-mL mineral water sample is treated in the same way as standards and diluted to a final volume of 100.00-mL It
gives an absorbance of 0.80. The absorbance of blank solution under the same conditions is 0.10. Calculate ppm (mg/L) of NO2 (46 g/mol)
and the molarity of NaNO2 (69 g/mol) in the original sample