If 3.9 g of element X reacts with 170. g of element Y to form the compound XY, what is the percent by mass of element X in the compound?

Which best explains why an iceberg floats?

Tell me the iupac names of the following alcohols:

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.