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10 electro positive radicles and electronegative radicles with their valency & symbol/molecular formula
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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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How many grams of mgbr2 are needed to produce 75g or metal?
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10 electro positive radicles and electronegative radicles with their valency & symbol/molecular...
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