Assertion: gas's volume | /r/MadeOf | same number of particles
Facets:
value: under pressure
type: OTHER
value: under the same temperature
type: TEMPORAL
Source sentences:
text: In 1811, Amedeo Avogadro verified that equal volumes of pure gases contain the same number of particles.
text: It is found that under the same temperature and pressure, equal volumes of all gases contain the same number of particles.