Constituent
Name
Ultra high vacuum - ~1e-9 mbar
Family
gas
Class
molecular gas
Compound type
gas
Constituent abundance in material
Relevance
main - major
Arrangement
single phase
Mass fraction
1.0 $\pm$ 0.001
Chemical composition
Isotope mixture type
terrestrial abundance
  Formula Name Family Number min-max Mole fraction Mass fraction State Relevance Comments
$H_2$ Hydrogen molecule mixed impurity
$CO$ Carbon monoxide molecule mixed impurity
$H_2O$ Water molecule mixed impurity
Chemical functions
  Function Number Relevance
$R-OH$ 2 impurity
Chemical bonds
  Bond Number Relevance
$H-H$ 1 impurity
$C^-\equiv O^+$ 1 impurity
$-O-H$ 2 impurity
Phase type
gas
Texture
gas