Answers: 2
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.
Answers: 3
Chemistry, 22.06.2019 23:00, chastineondre7979
What is the formula of the ionic compound composed of calcium cations and chloride anions
Answers: 1
Chemistry, 22.06.2019 23:30, lizdeleon248
The sum of the oxidation numbers in a neutral compound is always
Answers: 2
Small quantities of oxygen can be prepared in the laboratory by heating potassium chlorate, KClO3(s)...
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