Assertion: hemoglobin's reaction | /r/CapableOf | become noticeable
Facets:
value: in an electric discharge
type: OTHER
value: above 1200°c
type: TEMPORAL
Source sentences:
text: The reaction of oxygen with nitrogen is endothermic because of the particular stability of the N 2 molecule and becomes noticeable only above 1200°C or in an electric discharge: N 2 + O 2 = 2NO.