Ingxenyenamba IMisa? Yini ngempela?

Phakathi yokusabela chemical kungenzeki ngaso sonke isikhathi ukuthi kwakuthiwa okuhleliwe, okungenani quantitatively. Ngokuvamile, lokhu kungenxa izimo ingathiyeki yokusabela - nonideal lokushisa contact sufficient kulethe futhi nje okuphothula chemical reagents. Kulokhu, lo bamakhemikhali zisebenzisa inkulumo ethi "ingxenyenamba mass okukhiphayo."

Lo mqondo kuhlanganisa value othize - iphesenti cishe etholwe maqondana nalokho kwakufanele amakhemikhali ujike. Ebekwe incwadi "omega". Lokhu value kumelwe kubhekwe, abafundi bavame ukukhohlwa ukubala iphesenti elincane. Ikakhulukazi esidumazayo ivuliwe izinhlobo ezahlukene zokuhlola - isitimela yokucabanga ilungile, kanti ukuhlolwa ejwayelekile ezongenza iningi amaphuzu umsebenzi ukubala - futhi ukuhlolwa oku trifles ezinjalo "catch". Ngisho enikezwa ithuba lokukhetha phakathi ikhumbula ukusabela iphutha elinjalo. Kulula abanjwe. Ngakho-ke ngaphambi ukuxazulula inkinga, hlola - kungakhathaliseki ipharamitha "ingxenyenamba mass okukhiphayo."

Zikhona nezinye, imiqondo efanayo-ukuzwakala. Igama elithi "ingxenyenamba mass" zingahlanganiswa namanye amagama. Bese etholwe, isibonelo, iphesenti izinto emkhandweni wensimbi. Okungukuthi, une ucezu impahla lapho othile kuphela ingxenye kungaba asabela. Futhi kumele kubonelelwe izibalo, noma ingozi ukuwela ogibeni, kanye umqondo welithi "ingxenyenamba mass okukhiphayo." Baningi kakhulu zibanjwe futhi ngempumelelo. Isexwayiso!

Isimo has a ingxenyenamba mass kwalesi sakhi ukuxubana? Lokhu kusho ukuthi ama-athomu alo akha ingxenye ethile ngesisindo ngoqobo. Ngomqondo onabile, osokhemisi abathandi izixazululo eziyinkimbinkimbi ingxenyenamba mass kungaba wusizo sokubalwa ukuphendula zibalo. Enye SIZUZISA lolu lwazi kungenzeka, uma ufuna ukusetha ifomula lomcebo. Kuphela nje qaphela - kukhona izidakamizwa isomers futhi izinto ngefomula efanayo ezilinganiselwe. Wena ukusungula ifomula eqondile kuyodingeka ukusabela zamakhemikhali. Kodwa lokhu akulona ezingeni lesikole, nemincintiswano ku-chemistry.

Eqinisweni, ngokuvamile zonke imisebenzi lula kakhulu, abafundi bahlolelwa ulwazi ifomula aphansi kanye nekhono ukwenza imisebenzi elula zezibalo, ungakhohlwa nenani le-athomu-molecule elilodwa. Wenzenjani ukubala ingxenyenamba mass timphawu? Ngokusho etafuleni, ukuthola isisindo athomu element oyifunayo, bande ngenani ngqo zama-athomu engqamuzaneni. Lona numerator. Futhi kule zihilela kufanele kube isisindo yamangqamuzana lonke iyunithi efana nesimo ifomula, okungukuthi isici yakho ne izici kwesokudla kanye nazo zonke ezinye izingxenye zaleli nesisindo inombolo engqamuzaneni. Ngokwesibonelo, isisindo yamangqamuzana molecule yamanzi - 16 (i-oksijini), engeza amabili hydrogen atom (1 + 1). Ubude 18. IMisa ingxenyenamba hydrogen isici ilula: ukuhlukana 2 na18.Pri kudingeka wande ngamaphesenti ayikhulu, kodwa kungabuye njengamaphesenti ledesimali. Ngu Isifaniso futhi wenze amafomula eziyinkimbinkimbi, lapho izakhi ezintathu noma ngaphezulu.

ingxenyenamba IMisa umqondo kusebenza izixazululo. Numerator - mass ziyoncibilika, le zifana - isisindo kuphela plus isisindo siphela.

Uma ukulalelisisa kanye ukuqonda ngamunye amacala kunokwenzeka, ungenalo izwi ngesikhathi aphansi. Futhi yini ezwe ubuhlungu ngenxa iphuzu ongaphakeme lapho konke kubonakala ingaxazululwa, futhi umphumela akajabuli. Vele ungaphuthelwa migomo kwezinhlobo. Isifundo nabakwenzayo ku imisebenzi ethize. Lapho nabete uhlangothi, kuzo zonke izinkinga kuyoba esikhathini esidlule.