Cov txheej txheem:
Video: Koj pom qhov feem pua ntawm atoms li cas?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Nrhiav qhov loj feem pua muaj pes tsawg leeg ntawm ib lub caij, faib qhov loj pab ntawm lub caij los ntawm tag nrho cov molecular loj. Tus lej no yuav tsum tau muab faib ua 100% kom qhia tau tias yog a feem pua.
Hais txog qhov no, koj nrhiav tau qhov feem pua ntawm cov ntsiab lus li cas?
Ib feem pua
- Nrhiav cov molar loj ntawm tag nrho cov ntsiab nyob rau hauv lub compound nyob rau hauv grams ib mole.
- Nrhiav cov molecular loj ntawm tag nrho cov compound.
- Faib cov khoom molar mass los ntawm tag nrho cov molecular loj.
- Tam sim no koj yuav muaj tus lej ntawm 0 thiab 1. Muab nws los ntawm 100% kom tau txais cov feem pua.
Tom qab ntawd, lo lus nug yog, ua li cas koj pom qhov loj feem pua ntawm atom? Kauj Ruam 1: Sau qhov paub thiab tsis paub ntau npaum li cas thiab npaj qhov teeb meem. Hloov txhua feem pua abundance rau hauv daim ntawv decimal los ntawm kev faib los ntawm 100. Muab cov nqi no los ntawm tus atomic loj ntawm cov isotope. Ntxiv ua ke rau txhua isotope rau tau qhov nruab nrab atomic loj.
Cov lus nug tseem yog, kuv tuaj yeem nrhiav qhov feem pua ntawm tus lej li cas?
Yog koj xav tau paub pes tsawg A yog ntawm B, koj yooj yim faib A los ntawm B, ces coj qhov ntawd tus lej thiab txav tus lej thib ob qhov chaw mus rau sab xis. Qhov ntawd yog koj feem pua ! Txhawm rau siv lub laij lej, sau ob tus lej xam cov feem pua thawj yog ntawm qhov thib ob los ntawm txhaj rau xam Feem pua.
Molarity formula yog dab tsi?
Molarity Formula . Molarity yog lub ntsiab lus uas feem ntau siv los piav txog qhov concentration ntawm cov tshuaj. Nws yog sib npaug rau moles ntawm solute muab faib los ntawm litres ntawm kev daws. Cov kuab tshuaj yog txhais tau tias yog cov tshuaj yaj, thaum cov kuab tshuaj yog cov khoom uas cov kuab tshuaj yaj (feem ntau yog dej).
Pom zoo:
Koj pom qhov theoretical feem pua ntawm cov pa oxygen hauv KClO3 li cas?
Qhov kev sim feem pua ntawm cov pa oxygen hauv cov qauv ntawm KClO3 yog xam los ntawm kev siv qhov sib npaug no. Kev sim % oxygen = Mass of oxygen poob x 100 Mass ntawm KClO3 Tus nqi theoretical ntawm % oxygen hauv potassium chlorate yog xam los ntawm cov mis KClO3 nrog molar mass = 122.6 g / mol
Qhov feem ntawm 33 1 3 feem pua yog dab tsi?
Piv txwv tus nqi feem pua ntawm cov zauv feem 25% 0.25 1/4 331/3% 0.333 1/3 50% 0.5 1/2 75% 0.75 3/4
Koj pom molarity li cas los ntawm qhov ntom thiab feem pua?
Molarity yog tus naj npawb ntawm moles ntawm soluteper liter ntawm kev daws. Hloov mus rau qhov ntom los ntawm kev muab cov lej ntawm moles los ntawm cov molecular loj ntawm cov compound.Hloov qhov ntom rau molarity los ntawm kev hloov mus rau gramsper liter thiab faib los ntawm molecular mass ntawm cov compound ingrams
Koj pom qhov kwv yees li cas feem pua ntawm kev siv txoj cai empirical?
Nrhiav thaj tsam hauv qab ntawm qhov nkhaus ntawm x = 9 txog x = 13. Txoj Cai Empirical lossis 68-95-99.7% Txoj Cai muab kwv yees feem pua ntawm cov ntaub ntawv poob hauv ib tus qauv sib txawv (68%), ob tus qauv sib txawv (95%) , thiab peb tus qauv sib txawv (99.7%) ntawm qhov nruab nrab
Yuav ua li cas koj sau ib feem raws li ib tug khoom ntawm ib tug tag nrho cov zauv thiab ib feem feem?
Cov cai los nrhiav cov khoom ntawm ib feem feem thiab tag nrho tus lej Peb xub sau tag nrho cov lej ua ib feem, piv txwv li, sau nws faib los ntawm ib qho; Piv txwv li: 7 yog sau ua 71. Peb mam li muab cov zauv. Peb muab cov denominators. Yog tias yuav tsum tau ua kom yooj yim, nws ua tiav thiab tom qab ntawd peb sau cov feem kawg