2. All of the following statements concerning a sample of oxygen gas at 1.00 atm pressure are true except a. The molecules are in constant rapid random motion. b. The pressure exerted by gaseous oxygen is due to the impact of the molecules with the walls of the container. c. The average kinetic energy of the gaseous oxygen is proportional to the absolute temperature of the gas. d. Collisions between the gaseous molecules are inelastic

Phosphoric acid is a triprotic acid ( =6.9×10−3 , =6.2×10−8 , and =4.8×10−13 ). to find the ph of a buffer composed of h2po−4(aq) and hpo2−4(aq) , which p value should be used in the henderson–hasselbalch equation? p k a1 = 2.16 p k a2 = 7.21 p k a3 = 12.32 calculate the ph of a buffer solution obtained by dissolving 18.0 18.0 g of kh2po4(s) kh 2 po 4 ( s ) and 33.0 33.0 g of na2hpo4(s) na 2 hpo 4 ( s ) in water and then diluting to 1.00 l.