Chemistry, 03.01.2021 03:20 josueur9656
With the help of a chemical equation, suggest a role for the acid in the formation of 2,4-dinitrophenylhydrazones.
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Chemistry, 22.06.2019 14:00, hammackkatelyn60
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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With the help of a chemical equation, suggest a role for the acid in the formation of 2,4-dinitrophe...
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