The compound dimethylamine, (ch3)2nh, is a weak base when dissolved in water. write the kb expression for the weak base equilibrium that occurs in an aqueous solution of dimethylamine:

Asingle atom of an element has 21 neutrons, 20 electrons, and 20 protons. which element is it? ok o z

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.

Matches the chemical name of each oxide of phosphorus to its chemical formula