Unit mninzi iziyobisi

Yintoni na ke iyunithi lexinene? Makhe achaze iimpawu inani elibonakalayo.

Eli binzana sisalathisi esibalulekileyo ioli, kwakunye iimveliso zepetroliyam ezahlukeneyo.

Iimpawu igama elithi

Xa petrochemical mihla basebenzisa izinto mninzi unit ezifana kg / m3, ngokunjalo g / m3. Ukusebenzisa izibalo ezifanayo owenziwe amaxabiso ezinxulumene ne nokumisela ubunzima kweziyobisi. Phambi kwalo mqulu, kwakunye lexinene eyaziwayo into, sikwazi isixa-oyile.

guquka

Weight osisiqu okanye umxube kwicandelo ecocekileyo imele isixa ubunzima, nto leyo uqulathwe iyunithi umthamo. SI unit of mninzi - kg / m3. Ukuthatha ukuba ixabiso ubunzima enye cubic meter yamanzi Yek, osuswe kwiqondo lobushushu degrees ezine.

Ngokomthetho ayenzi ukubala ixabiso elililo into okanye umxube macandelo, kwaye lexinene xa kuthelekiswa leyo ichaza umlinganiselo ubunzima umxube (icandelo) emanzini olunyulu umthamo ngokulinganayo.

Ngokwexabiso ngamanani isalathiso isalamane nokuxinana ingundoqo ayafana, kukho umahluko kuphela nenkalo. Xa engekho usisizalwane yeyunithi mninzi.

Kwilizwe lethu kukho GOST ekhethekileyo 3900, ngokutsho apho isigqibo mninzi kubushushu uboniso 20 degrees Celsius.

imigangatho ezikhethekileyo ngamazwe isetyenziselwa ukubala lexinene oyile kumazwe angaphandle kunye petroleum iimveliso. Zibandakanya ukusetyenziswa hydrometer eyidijithali analyzer mninzi.

EUnited States Britain wasebenzisa amaxabiso zeemeko ezithile, ezifana izidanga, wazisa nokuba izidanga ezizodwa Baume kunye IPA. Phakathi kwazo kukho ubudlelwane yavakaliswa quadratic arithmetic.

Ezinye izinto ephawulwe leligama mninzi d204. Ngenene le ubungakanani emzimbeni ibalwa amaxabiso ezahlukeneyo ubushushu, esebenzisa ixabiso ngumlingani lokwanda ngokomthamo.

Density kophawu eyahlukileyo kubalulekile kushishino petrochemical le. Ngaphezu koko, igama emzimbeni lisetyenziswa ekumiseleni ubume noshowo-iqela ngokuhlalutya umxube amaqhekeza hydrocarbon.

Ukususela oko mninzi kuxhomekeke

imilinganiselo Units konga zibonisa ukuba inani ebonakalayo enxulumene umthamo kunye nobunzima. Ziziphi ezinye Iimpawu iyabonakaliswa lexinene mba?

Kwi mninzi ichaphazela uhlobo eekhemikhali izinto abasemthethweni, ukwakhiwa iqhezu, ubunzima molecule ye kubahlali, ubukho izinyibiliki okubhalwe izinto ungalibali. Kuxhomekeke kubunzulu kunye yobudala wejoloji njengotshintsho lexinene yeoli. Xa chemistry usebenzisa ezinjalo iiyunithi mninzi izinto njengoko g / cm3.

Iindlela zokubona mninzi

ERashiya, izakusetyenziswa ukugqiba hydrometric lexinene indlela pycnometric. Lwalo lesibini indlela ende kunye nexesha elide, linika umlinganiselo accuracy eliphezulu. ubunzima bayo isisekelo ubalwa bethelekisa umthamo abahlalutya le oyile okanye oyile namanzi kubushushu abaninzi amaxabiso ngokulinganayo. Isiphumo iyunithi mninzi ukuya ngaphakathi 0,0001. Pycnometers athwele iglasi ukuba inshorensi uphawu. izitya Volume zivumelekile ku-1, 5, 25 ml.

Yintoni ethile indlela hydrometric? Kukho njengomgangatho ngazo ukuya indlela elebhu ukuba lexinene yeoli ulwelo, ioli uhlambulukile. Le ndlela iquka ukusetyenziswa iglasi hydrometer kwi +15 no +20 degrees Celsius.

A hydrometer isitya zezindlu, emazantsi ke zokulinganisa. indawo yayo lumele ukuba macala. hydrometers abaninzi sikali. Isixhobo yenziwe isikali ezizodwa, iyunithi le ingxinano ekhoyo. Ukuze kuphuculwe ukuchaneka neenkcazelo, ungasebenzisa iseti hydrometers, esebenzisa iyantlukwano eziliqela ezongezelelweyo kwi esikalini.

Le ndlela limisela lexinene kwezisombululo motile ecacileyo, ngokusebenzisa kuqondana ukuba meniscus lentendelezo ephantsi, esa hydrometer zeendawana. Xa uzingela lexinene ulwelo ngaphaya isikali hydrometer ufundwa ngokukhetha ukuqondana ngentonga meniscus eliphezulu.

Ekubeni ukuntywiliselwa hydrometer egudileyo, emva kokusekwa kwayo, lexinene i parameters lubalwe. Kwimeko apho kukho iyantlukwano obushushu degrees 20, ukumiselwa ingxinano oluqhutywa phaya Isalathisi ezikhoyo ubushushu, ngoko recalculation olwenziweyo.

Kubalwa loxinano

Kubomi bemihla ngemihla, abantu badla ngokusebenzisa amabinzana athelekisekayo: "ekukhanyeni, njengokuba ukuba umoya," "enzima, njengelothe". Yaye phantse namnye kubo engaphenduli bacinge malunga nokuba athethayo.

Physics zesikolo zifundo zenziwa abantwana izibalo, abaqhagamshelwe izixa ezintathu emzimbeni: uxinano, ubunzima, umthamo. Umzekelo, kucetywa ukuba ukubala ubunzima sobhedu nemivalo yesinyithi, ukuba lomqulu. Ukumelana umsebenzi onjalo, oko izikhombisi kuyimfuneko ezifana mninzi. Le metal luthe, kokukhona uya kuba bar ubunzima.

Indlela yokwenza yokukala ubunzima amalungu lead na yamatye ezahlukeneyo? Okokuqala sibone ubude, ububanzi, ubude ngamnye kubo, ebalwa ukusuka isixa kwezalathisi ezifunyenweyo. Unga sebenzisa ngoko i ubunzima lever ebekwe yamatye. Ukuze ubone loxinano eziyimfuneko ukufumana umlinganiselo yokunikana umthamo into.

isiphelo

Yintoni lexinene? Le ubuninzi emzimbeni leyo kuluphawu into ethile. Oku kuchazwa njengoko umlinganiselo yokunikana umthamo kweziyobisi. Le parameter luchazwa yileta (po), iyunithi esisiseko zemilinganiselo International SI yi kg / m3. It ephawula into ngokwayo komntu akuxhomekekanga ekuzithandeleni yintoni umthamo okanye ubunzima kwisampula yokuqala. Xa sikrini izihlandlo ezithathu ubunzima umxube okanye iziyobisi ecocekileyo, kanye amaxesha amaninzi umthamo iza kuncipha, lo gama i-mninzi lihlala rhoqo.