Lub teeb tshaj plaws ntawm cov tshuaj, ib qho tseem ceeb ntawm cov organic tshuaj, ib feem tsim nyog ntawm cov molecules ntawm lub neej - dej - thiab nws yog tag nrho ntawm hydrogen. Nws lub npe tau muab txhais ua lus Lavxias los ntawm kev hloov pauv ntawm cov lus Greek - "muab yug rau dej." Hydrogen raws li ib tug roj yog ib tug zoo capricious thiab txaus ntshai tshuaj (nws ignites!). Thiab hydrogen nyob rau hauv daim ntawv atomic yog heev nquag thiab muaj peev xwm txo tau. Yog li ntawd, hauv phau ntawv teeb meem tshuaj, tus menyuam kawm ntawv yuav raug nug kom txiav txim siab seb qhov molar loj ntawm hydrogen yog dab tsi. Lo lus nug no tuaj yeem cuam tshuam txawm tias cov neeg laus uas tsis nco qab chemistry.
Qhia koj txhais li cas
Lub tswv yim ntawm "hydrogen" los ntawm qhov kev xav ntawm qhov kev xav tsis meej. Nws tuaj yeem txhais tau hais tias ob qho tib si hydrogen atoms thiab cov roj sib txuas uas muaj nyob hauv daim ntawv molecular. Hauv qhov thib ob, nws yog kev sib xyaw ntawm ob lub atoms. Feem ntau yuav, lub tswv yim ntawm "molar mass of hydrogen" yog hais txog cov pa roj, vim tias lub tswv yim ntawm atomic mass yog feem ntau siv rau ib tus neeg atoms. Tab sis kuj nyob rau hauvDawb daim ntawv hydrogen tuaj yeem tshwm sim, tshwj xeeb tshaj yog nyob rau hauv qee cov txheej txheem physico-chemical. Thiab ib tug mole ntawm cov khoom no muaj loj. Yog li txhua zaus koj daws qhov teeb meem, qhia meej txog qhov koj txhais li cas.
Free atom
Yog tias koj txhais tau tias atom, ces molar mass ntawm hydrogen yog ib gram ib mole. Nws tuaj yeem hloov mus rau kilograms ib mole, ua raws li cov cai SI, rau qhov no koj tsuas yog yuav tsum tau muab 1 los ntawm 10 mus rau qhov rho tawm thib peb lub zog. Txawm hais tias cov ntaub ntawv no yuav tsis raug tag nrho, vim tias qhov hnyav ntawm atomic tsis yog tus lej suav, tab sis cov zauv feem.
How nyuaj
Tab sis ceev faj - yog tias koj daws qhov teeb meem hauv phau ntawv physics, koj yuav ntsib cov ntaub ntawv hnyav ntawm hydrogen uas muaj qhov sib txawv molar. Cov hydrogen feem ntau hu ua protium thiab nws cov mole hnyav ib gram, tab sis kuj muaj deuterium (2 g ib mole) thiab tritium (3 g ib mole). Deuterium muaj nyob rau hauv ntau me me (tsawg dua 0.2%) nyob rau hauv lub ntiaj teb, thiab tritium yuav luag tsis pom nyob rau hauv tag nrho, tab sis nws yog ib qho yooj yim kom tau txais nyob rau hauv nuclear tshuaj. Nyob rau hauv tus txheej txheem ntawm kev daws teeb meem tiag tiag, physics thiab chemistry tsis txawv, yog li yog tias koj tab tom npaj rau kev ua haujlwm hauv natural sciences, koj yuav tsum tau npaj los txiav txim siab molar mass ntawm hydrogen nyob rau hauv cov xwm txheej tsis zoo li no.
Xaiv rau cov duab molecular
Yog hais tias qhov teeb meem yog hais txog cov roj, ces koj yuav tsum muab cov atomic loj ntawm hydrogen los ntawm ob thiab muab cov chav tsev g ib mole. Atomic units thiab grams per mole yog sib npaug ntawm tus lej,tab sis cov qub tau siv ntau dua hauv physics thiab kev sib tham ntawm cov khoom ntawm cov ntsiab lus, thiab tom kawg hauv kev daws teeb meem hauv chemistry. Tab sis txawm nyob ntawm no koj tuaj yeem raug ntes thiab nug txog qhov hnyav ntawm hydrogen. Los ntawm txoj kev, ceev faj, qee zaum koj yuav tsis cia siab tias yuav muab 2 lossis 3 los ntawm ob txhua. Muaj cov ntaub ntawv sib xyaw, piv txwv li, deuterium nrog tritium (cov molar loj ntawm hydrogen hauv qhov no yuav yog 2 + 3=5), lossis protium nrog deuterium (3), lossis tritium nrog protium (4). Yog li ntawd, xav kom muaj laj thawj thiab ntxiv, tsis sib npaug, kom tsis txhob yuam kev nrog hnyav molecules.
Ntxim qab kawg, cov dej uas muaj hydrogen hnyav kuj hu ua hnyav. Teeb meem nrog nws cov kev tsim tawm los ntawm hnyav hydrogen tuaj yeem nyuaj, thiab rau lub hom phiaj no, koj yuav tsum tau xam seb qhov molar loj ntawm hydrogen yog dab tsi hauv koj qhov xwm txheej tshwj xeeb.
