Cov ntaub ntawv dab tsi ua rau cov ntawv sau npe hauv cov tshuaj formula muab?
Cov ntaub ntawv dab tsi ua rau cov ntawv sau npe hauv cov tshuaj formula muab?

Video: Cov ntaub ntawv dab tsi ua rau cov ntawv sau npe hauv cov tshuaj formula muab?

Video: Cov ntaub ntawv dab tsi ua rau cov ntawv sau npe hauv cov tshuaj formula muab?
Video: Tshuaj theem vim li cas thiaj tau nqi ?/ Siv kho mob dab tsi?/paris polyphylla use for? 2024, Kaum ib hlis
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Cov ntawv lossis cov ntawv uas sawv cev rau lub ntsiab lus hu ua nws lub cim atomic. Cov lej tshwm li subscripts hauv tshuaj formula qhia tus naj npawb ntawm atoms ntawm lub caij tam sim ua ntej lub subscript . Yog tsis muaj subscript zoo nkaus li, ib qho atom ntawm lub ntsiab yog tam sim no.

Qhov sib thooj, 2 lub hom phiaj ntawm cov ntawv sau npe hauv cov qauv tshuaj yog dab tsi?

Cov subscript " 2 " txhais tau hais tias ob lub atoms ntawm lub caij hydrogen tau koom ua ke los tsim ib lub molecule subscript tsuas yog siv thaum muaj ntau tshaj ib lub atom raug sawv cev. Daim duab hauv qab no qhia txog qhov qauv rau dej siv cov cim. Qee cov molecules ntau dua thiab lawv tshuaj formula.

Ib yam li ntawd, cov tshuaj formula qhia koj li cas? Lub compound yog ib yam khoom uas tsim los ntawm ib qho kev faib ua feem ntawm ob lossis ntau lub ntsiab lus. A chemical formula qhia peb tus naj npawb ntawm atoms ntawm txhua lub ntsiab lus hauv ib qho chaw. Nws muaj cov cim ntawm cov atoms ntawm cov ntsiab lus tam sim no nyob rau hauv lub compound thiab muaj pes tsawg tus muaj rau txhua lub caij nyob rau hauv daim ntawv ntawm subscripts.

Ib yam li ntawd, koj tuaj yeem nug, vim li cas nws tseem ceeb kom tau txais cov ntawv sau raug raug hauv cov qauv?

Teb thiab piav qhia: Subscripts tshwj xeeb yog tseem ceeb hauv kev tshawb fawb vim tias tsis muaj lawv, ntau cov tshuaj lom neeg thiab cov molecules yuav tsis ua sib npaug.

Dab tsi yog N subscript A hauv chemistry?

Tshuaj cov qauv siv cov tsiaj ntawv thiab cov lej los sawv cev tshuaj hom (piv txwv li, compounds, ions). Cov lej tshwm li subscripts hauv tshuaj formula qhia tus naj npawb ntawm atoms ntawm lub caij tam sim ua ntej lub subscript . Yog tsis muaj subscript zoo nkaus li, ib qho atom ntawm lub ntsiab yog tam sim no.

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