In KCl, how are the valence electrons distributed? A) The electrons are unequally shared between K and Cl, forming a polar covalent bond.

B) The electrons are transferred from K to Cl.

C) The electrons are shared between many K and Cl ions, creating a "sea of electrons."

D) The electrons are equally shared between K and Cl, forming a covalent bond.

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.