At the end of a chemical reaction, what is the total mass of the reactants compared to the total mass of the products?

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

What human activity increases beach erosion?

How many moles in .5g of sodium bromide?