Calculate H for the reaction: 2NO(g) + O2(g) —> 2NO2(g) given the following data: Reaction 1 [1/2N2(g) + 1/2O2(g) —> NO(g) H= 90.4 kJ] Reaction 2 [1/2N2(g) + O2(g) —> NO2(g) H=33.9 kJ]

Agas has a volume of 0.7 l at 300 mmhg. what would be the new volume at 900 mmhg

Chemical energy is a form of a. kinetic energy only. b. both potential and kinetic energy. c. neither potential nor kinetic energy. d. potential energy only. reset

As air becomes more dense, (select all that apply) o. air weighs less o. gas molecules are closer together o. air is colder o. air weighs more o. gas molecules are further apart o. air is hotter