Calculate the enthalpy of the reaction
2no(g)+o2(g)→2no2(g)
given the following reactions and enthalpies of formation:
12n2(g)+o2(g)→no2(g), δfh∘a=33.2 kj mol−1
12n2(g)+12o2(g)→no(g), δfh∘b=90.2 kj mol−1

Chemical kinetics what was the rate of reaction in trial 3? choose the closest answer.

Which statement correctly describes metallic bonds? a. they form when certain atoms lose electrons and other atoms gain electrons. b. they involve an attraction between anions and cations. they always involvpoth a metal and a nonmetal. d. they can only form between atoms of the same element. e. they form because electrons can move freely between atoms.

Identify arrows pointing to bonding electrons. done h-0-0-h ) intro