Cov txheej txheem:
Video: Polar kua txhais li cas?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Polar kua yog kua uas muaj polar molecules. Rau molecules yuav polar , nws yuav tsum tau ntsib dipole lub sij hawm nyob rau hauv nws tus kheej. Dipole lub sijhawm yog tshwm sim los ntawm tsis sib npaug electronegativity ntawm atoms nyob rau hauv covalent daim ntawv cog lus. Piv txwv li, oxygen yog electronegative heev, lub ntsiab lus tias nws yog xav tau electrons phem heev.
Tib neeg kuj nug, dab tsi yog piv txwv ntawm polarity?
Piv txwv ntawm Polar Molecules
- Dej (H2O) yog polar molecule.
- Ethanol yog polar vim hais tias cov pa atoms nyiam electrons vim lawv cov electronegativity ntau dua li lwm cov atoms hauv molecule.
- Ammonia (NH3) yog polar.
- sulfur dioxide (SO2) yog polar.
- Hydrogen sulfide (H2S) yog polar.
Tsis tas li ntawd, piv txwv li polar thiab nonpolar yog dab tsi? Rau piv txwv , nyob rau hauv Cl2 molecule yog tsis muaj polar raws li daim ntawv cog lus nyob nruab nrab ntawm tib lub atom. Ib yam li ntawd, C-O daim ntawv cog lus hauv CO2 yog polar . Yog li, cov molecules uas tsis yog xoom net dipole lub sij hawm hu ua a polar molecules thiab yog hais tias lub net dipole lub sij hawm yog xoom lawv hu ua tsis muaj polar molecules.
Ib yam li ntawd, tib neeg nug, dab tsi yog polar thiab tsis polar?
A polar bond yog thaum ib daim ntawv cog lus tsim los ntawm ob lub atoms uas sib koom electrons tsis sib npaug. Kev sib faib tsis sib npaug ntawm cov hluav taws xob tsim ib feem tsis zoo thiab ib nrab qhov zoo sib txawv ntawm tus nqi thoob plaws lub molecule. A tsis yog - polar bond yog thaum electrons sib npaug sib npaug ntawm txhua lub atoms hauv ib lub molecule.
Puas yog HCL polar lossis nonpolar?
HCL yog a polar molecule li chlorine muaj ntau dua electronegativity tshaj hydrogen. Yog li, nws nyiam cov khoom siv hluav taws xob kom siv sij hawm ntau thaum nws kawg, muab nws tus nqi tsis zoo thiab hydrogen rau qhov zoo. Koj puas paub tias Br2 yog li cas polar los yog nonpolar ?
Pom zoo:
Koj txhais qhov hnyav txhais li cas?
Cov ntsiab lus. Weighted Mean: Ib qho txhais tau tias qee qhov txiaj ntsig pab ntau dua li lwm tus. Thaum qhov hnyav ntxiv rau 1: tsuas yog muab txhua qhov hnyav los ntawm tus nqi sib xws thiab suav tag nrho. Txwv tsis pub, muab txhua qhov hnyav w los ntawm nws qhov sib piv tus nqi x, suav tias tag nrho, thiab faib los ntawm qhov sib npaug ntawm qhov hnyav: Qhov Ntsuas Ntsuas = ΣwxΣw
Cov kua dej thiab hom kua dej yog dab tsi?
Cov kua dej tuaj yeem muab faib ua plaub yam yooj yim. Cov kua dej zoo tagnrho. Cov kua dej tiag tiag. Newtonian kua dej. Tsis yog-Newtonian Fluid
Koj puas ntxiv cov kua qaub rau hauv lub hauv paus lossis lub hauv paus rau cov kua qaub?
Ntxiv cov kua qaub ua kom cov concentration ntawm H3O + ions hauv cov tshuaj. Ntxiv ib lub hauv paus txo cov concentration ntawm H3O + ions hauv cov tshuaj. Cov kua qaub thiab lub hauv paus zoo li cov tshuaj tiv thaiv. Yog hais tias lub hauv paus yog ntxiv rau cov kua qaub, cov tshuaj yuav tsis acidic thiab txav mus rau nruab nrab ntawm pH nplai
Koj txhais li cas los ntawm lo lus kua siab?
Dej siab. n. (General Physics) lub siab tawm los ntawm cov kua dej ntawm txhua qhov hauv nws. Qhov sib txawv ntawm qhov siab ntawm ob theem yog txiav txim siab los ntawm cov khoom ntawm qhov sib txawv ntawm qhov siab, qhov ntom ntom, thiab qhov nrawm ntawm lub caij nplooj zeeg dawb
Vim li cas cov kua siv lead ua kua hloov xim nrog kub?
Cov molecules hauv cov kua siv lead ua kua tuaj yeem txav mus los ntawm nws tus kheej, xws li hauv cov kua, tab sis nyob twj ywm me ntsis, xws li hauv cov khoom siv lead ua (khoom). Cov kua siv lead ua kua no teb rau kev hloov pauv ntawm qhov kub thiab txias los ntawm kev hloov xim. Raws li qhov kub thiab txias, lawv cov xim hloov ntawm liab mus rau txiv kab ntxwv, daj, ntsuab, xiav, thiab ntshav