According to the law of conservation of energy, what will most likely happen in a closed system?
energy will be exchanged along with matter
energy will be exchanged, but matter will not be exchanged
energy will be created along with matter
energy will be destroyed, but maker will not be destroyed

Nitric acid can be formed in two steps from the atmospheric gases nitrogen and oxygen, plus hydrogen prepared by reforming natural gas. in the first step, nitrogen and hydrogen react to form ammonia: (g) (g) (g) in the second step, ammonia and oxygen react to form nitric acid and water: (g) (g) (g) (g) calculate the net change in enthalpy for the formation of one mole of nitric acid from nitrogen, hydrogen and oxygen from these reactions. round your answer to the nearest .