Assertion: argon's boiling point | /r/HasProperty | close to that of oxygen
Facets:
value: very
type: DEGREE
Source sentences:
text: Since the boiling point of argon is very close to that of oxygen (a difference of only 5.3 °F or 2.9°C) separating pure argon from oxygen (while also achieving high recovery of both products) requires many stages of distillation.