The World Health Organization Recommends That the Maximum Allowable Concentration

The World Health Organization recommends that the maximum allowable concentration of lead(II) in drinking water be limited to 0.015 mg/L. If the absorbance of lead(II) at 417 nm is 0.289 at this concentration, what is the molar absorptivity, assuming a 10-cm-long cell was used?'

A) 4.0 M^-1
B) 1.3 M^-1cm^-1
C) 430 M^-1cm^-1
D) 2.8 M^-1cm^-1
E) 6.1 M^-1cm^-1

Correct Answer:

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