Video: Cov molar loj ntawm cov dej hauv grams yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Qhov nruab nrab pawg ntawm ib H2O molecule yog 18.02am. Tus naj npawb ntawm atoms yog tus lej tseeb, tus lej ntawm mole isan pes tsawg tus lej; lawv tsis cuam tshuam tus naj npawb ntawm cov nuj nqis tseem ceeb. Qhov nruab nrab pawg ntawm ib mole ntawm H2O yog 18.02 grams . Qhov no tau hais tias: lub molar loj ntawm cov dej yog 18.02 g /mol.
Tsis tas li ntawd, qhov molar loj ntawm cov dej sib npaug li cas?
Cov pawg ntawm ib mole ntawm ib yam khoom yog sib npaug cov khoom ntawd molecular hnyav . Piv txwv li, themean molecular hnyav ntawm dej yog 18.015 atomic pawg units (amu), ces ib mole ntawm dej pes 18.015 Nws.
Ib yam li ntawd, pes tsawg moles nyob rau hauv ib gram? Koj tuaj yeem hloov pauv moles rau tus naj npawb ntawm particles ntawm ib yam khoom. Piv txwv li, peb pom tias 18 grams dej yog sib npaug rau 1 mole.
Ib yam li ntawd, nws raug nug, pes tsawg moles nyob hauv 1g dej?
SI base unit rau tus nqi ntawm cov khoom yog tus mole . 1 mole yog 1 moles dej , los yog 18.01528 g.
Qhov unit ntawm molar mass yog dab tsi?
Txawm li cas los xij, vim li cas keeb kwm, molar pawg thaj tsam ib txwm hais tawm hauv g / mol. Lub mole tau txhais nyob rau hauv xws li hais tias tus molar loj ntawm ib qho compound, hauv g / mol, yog tus lej sib npaug (rau txhua lub hom phiaj siv tau) rau qhov nruab nrab pawg ntawm ib qho molecule, hauv atomic loj units (daltons).
Pom zoo:
Qhov txawv ntawm qhov loj ntawm ib tug proton thiab qhov loj ntawm ib tug electron yog dab tsi?
Protons thiab neutrons muaj kwv yees li qub, tab sis lawv yog ob qho tib si loj dua li cov hluav taws xob (kwv yees li 2,000 npaug loj li electron). Tus nqi zoo ntawm ib qho proton yog sib npaug hauv qhov loj rau qhov tsis zoo ntawm tus electron
Dab tsi yog qhov sib txawv ntawm cov atomic loj los ntawm sab saum toj mus rau hauv qab hauv ib pab pawg?
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Qhov loj hauv grams ntawm 6.022 x10 23 atoms ntawm oxygen yog dab tsi?
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