Which best classifies the galaxies shown in the diagrams?

What is the overall order of reaction for rate = k[no]2[o2]

This flow chart shows the amount of energy that is emitted by each type of light. ultraviolet > blue light > yellow light > red light (maximum energy) (minimum energy) in an experiment, shining which type of light on a strip of metal would be least likely to produce the photoelectric effect? ultraviolet light dim blue light bright red light bright yellow light

Avariable that is not being directly tested during an experiment should be changed varied experimented controlled