A sample of gas in a closed container at 100°C exerts a pressure of 2 atm. If the gas is heated to 300°C, what is the new pressure?

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.