Video: Mole tswvyim yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov mole yog ib chav tsev ntawm tus nqi hauv chemistry. A mole ntawm ib yam khoom yog txhais raws li: Qhov loj ntawm cov khoom uas muaj tib tus naj npawb ntawm cov hauv paus ntsiab lus raws li muaj atoms nyob rau hauv raws nraim 12.000 g ntawm 12C. Cov chav hauv paus tej zaum yuav yog atoms, molecules, los yog formula units, nyob ntawm seb cov khoom muaj feem xyuam.
Ntawm no, dab tsi yog lub tswvyim mole piav qhia?
Cov mole Nws yog ib tug npaum li cas units zoo ib yam li cov paub units xws li khub, lub kaum os, tag nrho, thiab lwm yam. Nws muab ib tug tshwj xeeb kev ntsuas ntawm tus naj npawb ntawm atoms los yog molecules nyob rau hauv ib tug tej yam qauv ntawm cov teeb meem. A mole yog txhais Raws li tus nqi ntawm cov khoom muaj tib tus naj npawb ntawm cov khoom sib cais (atoms, molecules, ions, thiab lwm yam)
Ib sab saum toj, dab tsi yog nyob rau hauv mole? A mole yog atomic hnyav ntawm ib molecule ntawm cov tshuaj nyob rau hauv grams. Yog li ntawd a mole ntawm ib lub molecule zoo li hydrogen (H) nrog ib qho hnyav atomic ntawm 1 yog ib gram. Tab sis txawm tias qhov hnyav sib txawv, ob moles muaj pes tsawg tus lej ntawm cov molecules, 6.02 x 10 mus rau 23rd zog.
Tib neeg kuj nug, Mole hauv Chemistry yog dab tsi nrog piv txwv?
A mole sib raug rau qhov loj ntawm cov khoom uas muaj 6.023 x 1023 particles ntawm cov khoom. Cov mole yog SI unit rau tus nqi ntawm cov khoom. Nws lub cim yog mol . Los ntawm txhais: 1 mol ntawm carbon-12 muaj ib tug loj ntawm 12 grams thiab muaj 6.022140857 x 1023 ntawm carbon atoms (rau 10 cov duab tseem ceeb). Piv txwv.
Mole tswvyim thiab molar loj yog dab tsi?
MOLAR CONCEPT THIAB MOLAR MASSES . Ib mole yog tus nqi ntawm ib yam khoom uas muaj ntau li hais los yog cov chaw raws li muaj atoms nyob rau hauv raws nraim 12 g (los yog 0.012 kg) ntawm lub 12C cov isotope. Cov pawg ntawm ib mole ntawm cov khoom hauv grams yog hu ua nws molar loj.
Pom zoo:
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Koj pom lub tswvyim mole li cas?
Siv cov mis molecular los nrhiav cov molar loj; Txhawm rau kom tau txais cov lej ntawm moles, faib qhov loj ntawm cov khoom sib xyaw los ntawm cov molar loj ntawm cov ntsiab lus qhia hauv grams. Txiav txim siab qhov hnyav hauv grams ntawm txhua yam hauv qab no: 0.600 mol ntawm oxygen atoms. 0.600 mol ntawm oxygen molecules, O. 0.600 mol ntawm ozone molecules, O
Lub tswvyim thiab lub tswvyim yog dab tsi?
Raws li kev txheeb cais, lub ntsiab lus piav qhia txog kev sib raug zoo ntawm cov kev hloov pauv tshwj xeeb uas tau txheeb xyuas hauv txoj kev tshawb fawb. Nws tseem qhia txog cov tswv yim, txheej txheem thiab cov khoom tsim tawm ntawm tag nrho cov kev tshawb nrhiav. Lub tswvyim ntawm lub tswvyim tseem hu ua kev tshawb fawb paradigm