Cov txheej txheem:
Video: Yuav ua li cas koj xam cov neeg sawv cev hais?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2024-01-18 08:15
Yuav ua li cas thiaj nrhiav tau tus naj npawb ntawm cov neeg sawv cev hauv txhua yam khoom
- Ntsuas Pawg.
- xam Molar Mass.
- Faib pawg los ntawm Molar Mass.
- Muab ntau los ntawm Avogadro tus lej.
Raws li, koj yuav suav pes tsawg tus hais li cas?
Cov ntsiab lus tseem ceeb
- 1 mole ntawm tej yam khoom muaj 6.022 × 1023 cov khoom.
- 6.022 × 1023 yog lub npe hu ua Avogadro Number los yog Avogadro Constant thiab muab lub cim NA (1)
- N = n × NA N = tus naj npawb ntawm cov khoom hauv cov khoom.
- Yuav kom nrhiav tau tus naj npawb ntawm particles, N, hauv ib yam khoom:
- Txhawm rau nrhiav tus nqi ntawm cov khoom hauv moles, n:
Ib sab saum toj no, cov piv txwv ntawm cov khoom sawv cev yog dab tsi? A tus sawv cev particle yog qhov tsawg tshaj plaws nyob rau hauv uas ib txwm muaj nyob. Rau feem ntau ntawm cov ntsiab lus ntshiab, lub tus sawv cev particle yog atom. Cov qauv ntawm cov hlau ntshiab, carbon, thiab helium muaj xws li ib tus neeg hlau atoms, carbon atoms, thiab helium atoms, feem.
Ntawm no, dab tsi yog tus sawv cev particle?
A tus sawv cev particle yog qhov tsawg tshaj plaws ntawm cov khoom uas tuaj yeem tawg tau yam tsis muaj kev hloov pauv ntawm qhov muaj pes tsawg leeg. Teeb meem yog tsim los ntawm peb hom cov khoom sawv cev : atoms, molecules thiab formula units.
Yuav ua li cas chemists suav tus naj npawb ntawm cov neeg sawv cev hauv cov khoom?
Lub mole tso cai kws tshuaj rau suav tus naj npawb ntawm cov khoom sawv cev nyob rau hauv ib lub ntsiab lus. Lub atomic loj ntawm ib lub ntsiab lus qhia nyob rau hauv grams yog qhov loj ntawm ib mole ntawm lub caij. Yog xav xam cov molar loj ntawm ib compound, nrhiav cov tus lej grams ntawm txhua lub ntsiab lus nyob rau hauv 1 mole ntawm lub compound.
Pom zoo:
Vim li cas peb thiaj li hais txog kev txwv tsis pub muaj kev hais tawm thiab thaum twg peb yuav hais cov kev txwv?
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Dab tsi cov tshuaj tiv thaiv sawv cev rau lub cev qhuav dej synthesis?
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Cov kws kos duab hu li cas cov duab thiab cov duab siv los sawv cev rau cov yam ntxwv ntawm lub ntiaj teb nto?
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Tus neeg sawv cev oxidizing ua dab tsi hauv cov tshuaj tiv thaiv redox?
Tus neeg sawv cev oxidizing, los yog oxidant, nce electrons thiab txo qis hauv cov tshuaj tiv thaiv. Kuj tseem hu ua tus txais hluav taws xob, tus neeg sawv cev oxidizing feem ntau yog nyob rau hauv ib qho ntawm nws cov oxidation ntau dua vim tias nws yuav nce electrons thiab txo qis