What is the iupac name for the compound fes?
(1) iron(ii) sulfate (3) iron(ii) sulfide
(2) iron(iii) sulfate (4) iron(iii) sulfide

How many molecules of sucrose c12h22o11 are there in 454 grams of sucrose

The wave shown on the electromagnetic spectrum disturb the medium it passes through a)different frequency. b)the same frequency .

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.