Which of these is an indicator that a chemical reaction has occurred?

precipitate forms

temperature remains the same

color is diluted

mass increases

Which formula can be used to calculate the molar mass of hydrogen peroxide

One nanometer is equal to how many meters?

Which statement is actually true about the relationship between activation energy and reaction rates? low activation energy barriers result in low rates. high activation energy barriers result in low rates. low activation energy barriers result in no reaction. high activation energy barriers result in no reaction.