How many atoms are found in 5.20 g of Mg?

Name the following chemical compound: ca(c2h3o2)2

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