Video: Lub atomic mass txhais li cas hauv science?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Ib atomic loj (symbol: ma) yog pawg ntawm ib leeg atom ntawm ib tug chemical element. Nws suav nrog cov pawg ntawm 3 subatomic particles uas ua ib qho atom : protons, neutrons thiab electrons. 1 atomic loj unit yog txhais raws li 1/12 ntawm lub pawg ib tug carbon-12 atom.
Hais txog qhov no, dab tsi yog atomic mass hauv science?
Atomic Mass los yog Nyhav Txhais Atomic loj , uas tseem hu ua atomic hnyav, yog qhov nruab nrab pawg ntawm atoms ntawm ib lub caij, xam siv cov txheeb ze ntawm cov isotopes nyob rau hauv ib txwm tshwm sim. Atomic loj qhia qhov loj ntawm ib atom.
Ib yam li ntawd, atomic mass hauv physics yog dab tsi? physics . Atomic loj , qhov ntau ntawm cov teeb meem muaj nyob rau hauv ib atom ntawm ib yam. Nws yog qhia raws li ib tug ntau yam ntawm ib tug kaum ob lub pawg cov pa roj carbon-12 atom , 1.992646547 × 10−23 gram, uas yog muab rau ib atomic loj ntawm 12 units.
Ntawm no, atomic mass yog dab tsi thiab nws txiav txim siab li cas?
Atomic loj txhais tau tias yog tus naj npawb ntawm protons thiab neutrons hauv ib qho atom , qhov twg txhua proton thiab neutron muaj ib pawg ntawm kwv yees li 1 amu (1.0073 thiab 1.0087, ntsig txog). Cov electrons nyob rau hauv ib tug atom Nws yog me me heev piv rau protons thiab neutrons uas lawv pawg yog negligible.
Dab tsi yog atomic mass siv rau?
Atomic loj feem ntau yog xam los ntawm kev ntxiv cov protons thiab neutrons ua ke, tsis quav ntsej cov electrons vim lawv qhov me me. Daltons yog cov qauv ntsuas siv rau ntsuas atomic loj . Atomic loj units, los yog amu, kuj siv rau ntsuas atomic masses , thiab lawv sib npaug rau daltons.
Pom zoo:
Yuav ua li cas koj xam qhov nruab nrab atomic mass ntawm strontium?
Yog li, peb xam nws los ntawm kev noj qhov hnyav ntawm txhua tus isotopes thiab ntxiv rau lawv ua ke. Yog li, rau thawj pawg, peb yuav muab 0.50% ntawm 84 (amu - atomic mass units) = 0.042 amu, thiab ntxiv rau 9.9% ntawm 86 amu = 8.51 amu, thiab lwm yam
Lub ntsiab txhais twg yog Bronsted Lowry txhais ntawm lub hauv paus?
Bronsted-Lowry acid yog ib hom tshuaj uas pub ib los yog ntau dua hydrogen ions hauv cov tshuaj tiv thaiv. Hauv qhov sib piv, Bronsted-Lowry puag txais hydrogen ions. Thaum nws pub nws cov proton, cov kua qaub ua nws lub hauv paus conjugate. Ib qho kev saib ntau dua ntawm txoj kev xav yog cov kua qaub ua tus neeg pub khoom noj proton thiab lub hauv paus ua tus txais proton
Lub ntsiab lus twg muaj qhov loj tshaj plaws atomic mass?
Ununoctium yog qhov hnyav tshaj plaws, tab sis nws yog tib neeg tsim. Lub cev hnyav tshaj plaws uas tshwm sim yog uranium (atomic tooj 92, atomic hnyav 238.0289)
Lub atomic mass unit ntsuas li cas?
Atomic mass unit. Ib chav tsev atomic mass (abbreviated: amu, u, lossis Da) yog ib chav ntsuas uas siv los ntsuas qhov loj ntawm atoms. Lub atomic mass unit yog sib npaug rau ?1⁄12 ntawm cov pa roj carbon-12. Lo lus 'dalton' tau siv ntau lub sijhawm
Yog vim li cas lub sij hawm lub sij hawm teem los ntawm atomic tooj thiab tsis atomic mass?
Vim li cas lub Sijhawm Table yog teem los ntawm tus lej atomic thiab tsis yog atomic mass? Atomic tooj yog tus naj npawb ntawm protons nyob rau hauv lub nucleus ntawm txhua lub ntsiab lub atoms. Tus lej ntawd tshwj xeeb rau txhua yam. Atomic loj yog txiav txim los ntawm tus naj npawb ntawm protons thiab neutrons ua ke