How do you know a chemical reaction has occurred?

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

At 300 mm hg, a gas has a volume of 380 l, what is the volume at standard pressure

Identify arrows pointing to bonding electrons. done h-0-0-h ) intro