Chemistry, 27.12.2019 07:31 zanaplen27
Adrinking water supply is suspected of being contaminated with lead. samples of water aspirated directly into an air-acetylene flame gave an absorbance of 0.68 at 283.3nm. standard solutions containing 0.5 and 1.0 ppm were found to exhibit absorbances of 0.43 and 0.86 respectively. assuming the beer-lambert law is obeyed calculate the concentration of lead within the water sample. a. 79. oppm b. 0.79ppm c. 0.43ppm d. 0.96ppm e. 0.92ppm noeullib noilgoeps noods whaooah
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