Between points 3 and 4, energy is being used to? a. melt ice. b. heat water. c. vaporize water. d. heat water vapor.

When will le chatelier's principle come into effect? at the beginning of a reaction, when there are only reactants when a reaction has reached chemical equilibrium when a catalyst is added to a reaction mixture when a reaction is occurring but not yet at equilibrium

Match the mixture with the substance// i really need on this guys (it’s a pic btw)

Compare and contrast refraction of light and sound will give brainliest