What is a pure substance soda gasoline salt water or carbon dioxide

For the following, determine the type of reaction and then give products.

What’s the percent by mass of carbon in c10h14n2

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