During the summer, after a big storm blows through, david notices leaks from his air conditioner. which of the following is the best explanation of the contributing factor for this problem? a. the storm damaged the air conditioner. b. the make and model of the air conditioning unit is not compatible for his house. c. david has been using his air conditioner too much this summer. d. the air conditioner was vandalized.

In a sample of oxygen gas at room temperature, the average kinetic energy of all the balls stays constant. which postulate of kinetic molecular theory best explains how this is possible? a. attractive forces between gas particles are negligible because the particles of an ideal gas are moving so quickly. b. collisions between gas particles are elastic; there is no net gain or loss of kinetic energy. c. gases consist of a large number of small particles, with a lot of space between the particles. d. gas particles are in constant, random motion, and higher kinetic energy means faster movement.

This image is an example of a(n) a) atom. b) compound. c) mixture. d) molecule.

In the particles are arranged in a regular, repeating pattern. a)a crystalline liquid b)a crystalline solid c)all gases d)all solids