Are protons and electrons the same number

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

Tell me the iupac name of the following compounds:

Concentrations expressed as a percent by mass are useful when the solute is a a. liquid b. gas c. solid