Chemically, one can use compounds that react or absorb on of the gas, leaving behind the other.
Molecular sieve can be used for this purpose...or chemically active compounds that react with oxygen but not with nitrogen such as basic solution of pyrgallol (C6H3(OH)3), active metals (such as sodium, not lithium and alkaline earth metals as the latters react with N2 as well), and many others.
Answers & Comments
Verified answer
What sort of compounds are inside??? Organic??? Inorganic???
Basic, acidic, neutral???
Need more details
Chemically, one can use compounds that react or absorb on of the gas, leaving behind the other.
Molecular sieve can be used for this purpose...or chemically active compounds that react with oxygen but not with nitrogen such as basic solution of pyrgallol (C6H3(OH)3), active metals (such as sodium, not lithium and alkaline earth metals as the latters react with N2 as well), and many others.