How many grams of propane, C3H8, are needed to make 140 grams of water?

Summarize possible ways in which phases of matter could combine to form a solution.

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.

Which electron configuration represents the electrons in an atom of sodium in the ground state at stp