Which lists the waves in order of wavelength, from longest to shortest? A) X-rays, infrared, radio waves
B) infrared, visible light, gamma rays
C) ultraviolet, microwaves, visible light
D) radio waves, gamma rays, visible light

Plz choose one of the compounds from the table and explain how you know the numbers of atoms in your formula. is it possible for two different compounds to be made from the exact same two elements? why or why not? with a limited number of elements (less than 120 are known), does this mean we also have a small number of compounds or do we have a large number of compounds in this world?

What happens when an acid dissolves?

Two solids are mixed in a flask and stirred. after a few minutes, the flask becomes cold. which of the following best describes this reaction? a. an exothermic reaction b. a combustion reaction c. an endothermic reaction d. a decomposition reaction