What do you mean by chromatography?

Chromatography is a laboratory technique used to separate the components of a mixture by passing the mixture through a stationary phase.

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.