A postulate of the kinetic molecular theory is listed. Postulate: Gas particles are in constant random motion.

Which of the following activities can be used to demonstrate the postulate?
Recording the change in pressure when heating an inflated tire
Observing the change in an inflated balloon when placed in cold liquefied nitrogen
Observing the ease of pushing the plunger of a blocked nozzle syringe containing gas
Recording the speed of colored gas spreading from one jar to an empty jar
(Assistance would be greatly appreciated!) <3

Which statement correctly describes the phosphate ion, ? it is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge distributed over the entire ion. it is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge on the phosphorus atom. it is composed of one phosphorus atom and four oxygen atoms ionically bonded together, and there is a –3 charge distributed over the entire ion. it is composed of one phosphorus atom and four oxygen atoms ionically bonded together, and there is a –3 charge on the phosphorus atom.