The method developed in 14-11 was used for the routine detcrminationof iron in 25.0-mL
Chapter 14, Problem 14-12(choose chapter or problem)
The method developed in 14-11 was used for the routine detcrminationof iron in 25.0-mL aliquots of groundwater. Express the concentration (as ppmFe) in samples that yielded the accompanying absorbance data (1.00-cm cell).Calculate the relative standard deviation of the result. Repeat the calculationassuming the absorbance data are means of three measurements.(a) 0.143 (c) 0.068 (e) 1.512(b) 0.675 (d) 1.009 (f) 0.546
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