Part b
a laboratory analysis of vanillin, the flavoring agent in vanilla, indicates that its mass percent composition
is 63 15% c5,30% h and 31.55% o determine the empinical formula of vanillin

Which sentence about particles in matter is true? a. atoms are present in solids and liquids but not in gases. b. the particles of matter are in constant motion. c. the same kinds of atoms are found in different elements. d. when a solid changes to a liquid, the sizes of the particles change.