What information does the percent composition of an atom in a molecule give? a. The total mass that element contributes to a molecule give b. the relative number of atoms one element contributes to a molecule c. the total number of atoms of that element in a molecule d. the relative amount of mass an atom contributes to a molecule

Ibeg i need 20. a reaction produces 4.93 l of oxygen, but was supposed to produce 1 mol of oxygen. what is the percent yield?

Compare and contrast physical changes with chemical changes.

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