Video: Yuav ua li cas koj nrhiav tau tus txheeb ze zaus nyob rau hauv ib txwm faib?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Faib cov suav (the zaus ) los ntawm tus lej tag nrho. Piv txwv li, 1/40 =. 025 3/40 =. 075 ib.
Tsis tas li lo lus nug yog, koj ua li cas thiaj nrhiav tau tus txheeb ze zaus?
Nco ntsoov, koj suav zaus . Yuav nrhiav tau txheeb ze zaus , faib zaus los ntawm tag nrho cov ntaub ntawv muaj nuj nqis. Txhawm rau nrhiav qhov cumulative txheeb ze zaus , ntxiv tag nrho cov yav dhau los txheeb ze zaus mus rau txheeb ze zaus rau kab tam sim no.
Tom qab ntawd, lo lus nug yog, koj ua li cas thiaj nrhiav tau qhov kev faib tawm zaus? Cov kauj ruam los ua Koj Qhov Kev faib tawm zaus
- Kauj ruam 1: xam qhov ntau ntawm cov ntaub ntawv teev.
- Kauj ruam 2: Faib qhov ntau los ntawm tus naj npawb ntawm pawg koj xav tau thiab tom qab ntawd sib sau ua ke.
- Kauj ruam 3: Siv cov chav kawm dav los tsim koj pab pawg.
- Kauj Ruam 4: Nrhiav qhov zaus rau txhua pab pawg.
Tsis tas li ntawd nug, koj ua li cas suav cov txheeb ze zaus?
Xam qhov sib txheeb txheeb ze zaus : Ib lwm hom txheeb ze zaus uas peb tuaj yeem tau txais los ntawm ob txoj kev zaus table yog a sib txheeb txheeb ze zaus . A sib txheeb txheeb ze zaus pom los ntawm kev faib a zaus uas tsis yog nyob rau hauv tag nrho kab lossis Total kab los ntawm zaus kab tag nrho lossis kab tag nrho.
Koj nrhiav tau qhov zaus li cas?
A zaus yog tus naj npawb ntawm lub sij hawm cov ntaub ntawv muaj nqis tshwm sim. Piv txwv li, yog tias kaum tus tub ntxhais kawm tau qhab nia 80 hauv kev txheeb cais, ces tus qhab nia ntawm 80 muaj a zaus ntawm 10. Ntau zaus feem ntau sawv cev los ntawm tsab ntawv f. A zaus daim ntawv qhia yog tsim los ntawm kev npaj cov ntaub ntawv muaj nuj nqis nyob rau hauv ascending order of magnitude nrog rau lawv zaus.
Pom zoo:
Yuav ua li cas cov txheej txheem ntawm cell faib nyob rau hauv eukaryotes feem ntau zoo ib yam li cell faib nyob rau hauv prokaryotes?
Tsis zoo li eukaryotes, prokaryotes (uas suav nrog cov kab mob) tau txais ib hom kev faib cell hu ua binary fission. Hauv qee qhov, cov txheej txheem no zoo ib yam li mitosis; Nws yuav tsum tau rov ua dua ntawm cov cell chromosomes, cais ntawm cov theej DNA, thiab kev sib cais ntawm niam txiv cell cytoplasm
Yuav ua li cas koj pom cov chav kawm ciam teb nyob rau hauv ib tug zaus faib lub rooj?
Cov ciam teb qis dua ntawm txhua chav kawm yog suav los ntawm kev rho tawm ib nrab ntawm qhov sib txawv ntawm tus nqi 12 = 0.5 1 2 = 0.5 ntawm chav kawm qis. Ntawm qhov tod tes, tus ciam teb sab saud ntawm txhua chav kawm yog suav los ntawm kev ntxiv ib nrab ntawm qhov sib txawv ntawm tus nqi 12 = 0.5 1 2 = 0.5 rau chav kawm sab saud. Simplify cov ciam teb qis thiab sab sauv kab
Yuav ua li cas koj nrhiav tau tus naj npawb ntawm molecules nyob rau hauv ib tug tshuaj formula?
Multiply Moles los ntawm Avogadro Constant Muab cov naj npawb ntawm moles los ntawm Avogadro tas li, 6.022 x 10^23, los xam cov lej ntawm cov molecules hauv koj cov qauv
Yuav ua li cas koj nrhiav tau tus naj npawb ntawm electrons nyob rau hauv ib tug uncharged atom?
Tus naj npawb atomic sawv cev rau tus naj npawb ntawm protons hauv atom lub nucleus. Hauv ib qho atom uas tsis tau them nyiaj, tus naj npawb ntawm cov protons ib txwm sib npaug ntawm cov electrons. Piv txwv li, carbon atoms suav nrog rau protons thiab rau electrons, yog li cov pa roj carbon monoxide yog 6
Yuav ua li cas koj nrhiav tau tus naj npawb ntawm covalent bonds nyob rau hauv ib tug compound?
Tus naj npawb ntawm daim ntawv cog lus rau ib qho atom nruab nrab yog sib npaug rau cov xov tooj ntawm cov hluav taws xob hauv lub plhaub valence tag nrho (2 los yog 8 electrons) rho tawm cov valence electrons. Txoj kev no ua haujlwm vim tias txhua daim ntawv cog lus sib cog lus uas ib qho atom tsim ntxiv lwm lub tshuab hluav taws xob rau lub atoms valence plhaub yam tsis hloov nws cov nqi