Chemistry, 27.06.2019 10:10 browndariel
Which best describes the two types of shared characteristics? 1 - characteristics that remain in the common ancestor and the modern organism 2 - characteristics that are new and have been modified from what was found in the common ancestor 1 - characteristics that are new in the common ancestor and the modern organism 2 - characteristics that have been modified from what was found in the common ancestor 1 - characteristics that have been modified in the common ancestor but not in the modern organism 2 - characteristics that are new in both the common ancestor and the modern organism 1 - characteristics that remain in the common ancestor and the modern organism 2 - characteristics that are new in both the common ancestor and the modern organism
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The content of manganese (mn) in steel was determined spectrophotometrically and with the use of the standard addition method. an unknown sample of mn from a digested steel sample gave an absorbance of 0.185 when analyzed spectrophotometrically. when 5.00 ml of solution containing 95.5 ppm mn was added to 50.0 ml of the unknown steel solution (digested sample), the absorbance was 0.248. calculate the concentration, in parts-per-million (ppm), of mn in the digested steel sample solution.
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