In a paper chromatography chamber, which example could be the stationary phase?
air
plastic plate
paper

Paper  

Explanation:

Paper chromatography is a method of separating mixtures of coloured substances into their components.

It uses a stationary phase and a mobile phase.

A tiny drop of a solution of the mixture is applied to the paper, which is suspended in a solvent.

The solvent flows through the paper and carries the components of the mixture with it.

Different components travel at different rates, so the mixture separates into different coloured spots as the solvent front moves up the paper.

The solvent moves up the paper, so it is the mobile phase.

The paper does not move, so it is the stationary phase.

8 m/s because for him to get the same amount of energy as ray is putting out, bobby, who weighs half as much as ray, needs to run twice as fast.

6.4 cm (max) - 25 cm (min)