Answer:
a visible record (such as a series of colored bands, or a graph) showing the result of separation of the components of a mixture by chromatography.
Explanation:
Chromatography is a laboratory technique for the separation of a mixture. The mixture is dissolved in a fluid called the mobile phase, which carries it through a system on which is fixed a material called the stationary phase.
Most likely b,c or d sorry but idk I’m just helping other people answer by eliminating one answer
The arrangement of valence electrons in metals can be best described by the
A sea of electrons.
