When naming a transition metal ion that can have more than one common ionic charge, the numerical value of the charge is indicated by a _

Superscript after the name
Suffix
Prefix
Roman numerals filling the name

Nuclear fusion is the source of energy for stars. besides hydrogen, which other element is most likely also common in stars?

The climate of the continental united states is generally 1. tropical 2. temperate 3. arctic 4. highland

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.