Choose the correct words to make each statement true. A 3.1 M solution contains 3.1 of solute dissolved in 1 of solution. The M in 3.1 M refers to The concentration of a 3.1 M solution may also be expressed as and would be expressed in

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.

Which of these properties, used alone, would be least useful in identifying most minerals? a. color b. luster c. streak d. density

Which statement describes the phase change that occurs when dry ice is placed in an open container at room temperature?