Assertion: urea's nitrogen | /r/HasProperty | n 2
Facets:
Source sentences:
text: The process converts atmospheric nitrogen (N 2 ) to ammonia (NH 3 ) by a reaction with hydrogen (H 2 ) using a metal catalyst under high temperatures and pressures:
text: Although atmospheric nitrogen (N 2 ) is abundant, comprising nearly 80% of the air, it is exceptionally stable and does not readily react with other chemicals.
text: Mass production of ammonia mostly uses the Haber–Bosch process, a gas phase reaction between hydrogen (H 2 ) and nitrogen (N 2 ) at a moderately-elevated temperature (450 °C) and high pressure (100 standard atmospheres (10 MPa)):