In the gas phase, acetic acid exists as an equilibrium of monomer and dimer molecules. (The dimer consists of two molecules linked through hydrogen bonds.) The equilibrium constant, , at 25 °C for the monomer-dimer equilibrium has been determined to be . Assume that acetic acid is present initially at a concentration of mol/L at 25 °C and that no dimer is present initially. a What percentage of the acetic acid is converted to dimer? Percentage = %

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.

What does x represent in the formula for the compound xcl4?

Which statement is best described as a atom