Ka wehea te hau mura ki te hau mura kotahi me te hau mura whakauru, he āhuatanga mura, he pahū hoki. Ko te uara rohe kukū o te ranunga ōrite o te hau mura me te hau tautoko mura e puta ai te pahūtanga i raro i ngā tikanga whakamātautau paerewa. Ko te hau tautoko mura he hau, he hāora, he hau tautoko mura rānei.

Ko te rohe pahū e pā ana ki te rohe kukū o te hau mura, te kohu rānei i te rangi. Ko te iti rawa o te ihirangi o te hau mura ka taea te whakaputa pahū ka kiia ko te rohe pahū o raro; ko te kukū teitei rawa ka kiia ko te rohe pahū o runga. Ka rerekē te rohe pahū i runga i ngā wāhanga o te ranunga.

Ko ngā hau mura me ngā hau pahū noa ko te hauwai, te methane, te ethane, te propane, te butane, te phosphine me ētahi atu hau. He rerekē ngā āhuatanga me ngā rohe pahū o ia hau.

Hauwai

Hauwai (H2)He hau kore tae, kore kakara, kore reka. He wai kore tae i te pēhanga teitei me te pāmahana iti, ā, he paku wairewa ki te wai. He tino mura, ā, ka pahū kaha ina konatunatua ki te hau me te tūtaki ki te ahi. Hei tauira, ina konatunatua ki te chlorine, ka pahū noa i raro i te rā; ina konatunatua ki te fluorine i te pōuri, ka pahū; ka pahū hoki te hauwai i roto i te rango ina wera. Ko te rohe pahū o te hauwai he 4.0% ki te 75.6% (kukū rōrahi).

Metana

MetanaHe hau kore tae, kore kakara, ko tōna pāmahana kohua he -161.4°C. He mama ake i te hau, ā, he hau mura e tino uaua ana ki te rewa ki te wai. He matū waro māmā noa iho. Ka pahū te ranunga o te methane me te hau i te ōwehenga tika ina tūtaki ki te mura. Ko te % rohe pahū o runga (V/V): 15.4, ko te % rohe pahū o raro (V/V): 5.0.

Etana

Kāore te etana e wairewa i roto i te wai, he paku wairewa i roto i te etanoru me te āketo, he wairewa i roto i te penehīni, ā, ka taea te hanga ranunga pahū ina konatunatua ki te hau. He mea morearea te mura me te pahū ina pāngia e ngā pūtake wera me ngā mura tuwhera. Ka puta he tauhohenga matū kaha ina pā ki te wheorine, te chlorine, me ētahi atu. Te rohe pahūtanga o runga % (V/V): 16.0, te rohe pahūtanga o raro % (V/V): 3.0.

Poropana

Ka taea e te propane (C3H8), he hau kore tae, te hanga ranunga pahū ina konatunatua ki te hau. He mea morearea te mura me te pahū ina pāngia e ngā pūtake wera me ngā mura tuwhera. Ka tauhohe kaha ina pā atu ki ngā waikura. Teihana pahūtanga o runga % (V/V): 9.5, teihana pahūtanga o raro % (V/V): 2.1;

N.pētana

He hau mura kore tae te n-Pūtāne, kāore e wairewa i roto i te wai, he ngāwari ki te wairewa i roto i te etanoru, te etera, te kōroporuma me ētahi atu warowaihā. Ka hanga he ranunga pahū me te hau, ā, ko te rohe pahū he 19%~84% (ahiahi).

Etirena

He hau kore tae te Ethylene (C2H4), he kakara reka motuhake. Ka wairewa i roto i te etanoru, te etera me te wai. He ngāwari ki te tahu me te pahū. Ina tae te ihirangi o te hau ki te 3%, ka taea te pahū me te tahu. Ko te rohe pahūtanga he 3.0~34.0%.

Āhitirena

Ātiretine (C2H2)He hau kore tae, he kakara etera. He paku wairewa ki te wai, he wairewa ki te etanoru, ā, he ngāwari ki te wairewa ki te acetone. He tino ngāwari ki te tahu me te pahū, inā koa ka pā ki ngā phosphides, ki ngā sulfides rānei. Ko te rohe pahūtanga he 2.5~80%.

Poropīrene

He hau kore tae te propylene, he kakara reka i te āhua noa. He ngāwari te wairewa ki te wai me te waikawa acetic. He ngāwari te pahū me te tahu, ā, ko te rohe pahūtanga he 2.0~11.0%.

Sikporopana

He hau kore tae te Cyclopropane, he kakara rite ki te hinu etera. He paku wairewa ki te wai, ā, he ngāwari ki te wairewa ki te etanoru me te etera. He ngāwari ki te tahu me te pahū, ā, ko te rohe pahūtanga he 2.4~10.3%.

1,3 Pūtātini

He hau kore tae, kore kakara te 1,3 Butadiene, kāore e wairewa i roto i te wai, he ngāwari ki te wairewa i roto i te etanoru me te etera, ā, he wairewa hoki i roto i te otinga pūhaumāota. He tino kore pumau i te pāmahana rūma, ā, he ngāwari ki te pirau me te pahū, me te rohe pahū o te 2.16~11.17%.

Metilaora

He hau kore tae te methyl chloride (CH3Cl), he ngāwari ki te waimeha. He reka tōna reka, ā, he kakara rite ki te ether. He ngāwari ki te waimeha i roto i te wai, te etanoru, te ether, te chloroform me te waikawa acetic glacial. He ngāwari ki te tahu me te pahū, me te rohe pahū o te 8.1 ~ 17.2%