Which statement best describes what happens to the energy of the particles when water vapor begins to cool? A. The average potential energy decreases.

B. The average kinetic energy decreases.

C. The average potential energy remains the same.

D. The average kinetic energy remains the same.

Describe the interaction that occurs between two objects with the same electrical charge.

In which of the following phases of matter do molecules have the highest amount of energy? a. liquid b. gel c. solid d. gas

High-pressure liquid chromatography (hplc) is a method used in chemistry and biochemistry to purify chemical substances. the pressures used in this procedure range from around 500 kilopascals (500,000 pa) to about 60,000 kpa (60,000,000 pa). it is often convenient to know the pressure in torr. if an hplc procedure is running at a pressure of 1.03×108 pa , what is its running pressure in torr?