Hi;) this is easy i just need someone to explain it btw its not B because i already tried it 1. The statements below compare the similarities of ultraviolet light and microwaves. Which choice does NOT belong in this list?
A Neither can be seen by the human eye.
B Scientists use both to study the structure of galaxies.

C They both have wavelengths that are longer than those of visible light.
D They are both types of radiation emitted by the Sun.

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.