Video: Muaj pes tsawg daim Vsepr muaj?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Tsib
Ua raws li qhov no hauv kev xav, muaj pes tsawg molecular duab?
tsib
Ib sab saum toj no, dab tsi yog 5 cov duab yooj yim ntawm cov molecules? Molecular Geometry. VSEPR txoj kev xav piav qhia tsib lub ntsiab ntawm cov qauv yooj yim: linear, trigonal planar, tetrahedral , trigonal bipyramidal, thiab octahedral.
Hais txog qhov no, dab tsi yog 6 lub hauv paus molecular duab?
Valence-Shell Electron-Pair Repulsion Theory
| Tus naj npawb ntawm pawg electron | Lub npe ntawm electron pawg geometry |
|---|---|
| 3 | trigonal-planar |
| 4 | tetrahedral |
| 5 | trigonal-bipyramidal |
| 6 | octahedral |
Yuav ua li cas koj txheeb xyuas Vsepr zoo?
- VSEPR Cov Cai:
- Txheeb xyuas lub hauv paus atom.
- Suav nws valence electrons.
- Ntxiv ib qho hluav taws xob rau txhua qhov sib txuas atom.
- Ntxiv lossis rho tawm electrons rau nqi (saib Cov Lus Qhia saum toj kawg nkaus)
- Muab tag nrho cov no los ntawm 2 kom pom tag nrho.
- tus naj npawb ntawm electron khub.
- Siv tus lej no los twv seb qhov zoo li cas.
Pom zoo:
Muaj pes tsawg daim phiaj squares nyob rau hauv lub ntiaj teb?
Maidenhead grid squares faib lub ntiaj teb rau hauv 324 thaj chaw loj ntawm 10 degrees ntawm latitude los ntawm 20 degrees ntawm longitude thiab hu ua teb. Txhua daim teb tau muab faib ua 100 squares. Qhov no yog qhov uas lub npe daim phiaj squares los ntawm. Txhua qhov 100 squares sawv cev rau 1 degree los ntawm 2 degrees
Muaj pes tsawg daim ntawv luam ntawm DNA tom qab 10 lub voj voog ntawm PCR?
Polymerase saw cov tshuaj tiv thaiv (PCR) Tus naj npawb ntawm ob npaug ntawm cov khoom DNA tau muab faib ua ob npaug hauv txhua lub voj voog, yog li tom qab n cycles koj muaj 2 ^ n (2 rau n: th lub zog) luam ntawm DNA. Piv txwv li, tom qab 10 lub voj voog koj muaj 1024 daim ntawv, tom qab 20 lub voj voog koj muaj txog ib lab luam, thiab lwm yam
Muaj pes tsawg guanine bases puas yog 50 lub hauv paus khub ob txoj hlua DNA 100 bases tag nrho muaj yog tias nws muaj 25 adenine bases?
Yog li, muaj tag nrho ntawm 25 + 25 = 50 adenine thiab thymine hauv tag nrho. Qhov ntawd tawm 100− 50 = 50 seem hauv paus. Nco ntsoov tias cytosine thiab guanine daim ntawv cog lus nrog ib leeg, thiab yog li lawv sib npaug ntawm cov nyiaj. Tam sim no peb tuaj yeem faib los ntawm 2 kom tau txais tus lej ntawm guanine lossis cytosine hauv paus
Muaj pes tsawg hom daim duab peb sab muaj raws li cov ces kaum?
peb Ntawm no, dab tsi yog hom ntawm daim duab peb sab thiab lawv cov khoom? Qhov sum ntawm cov ces kaum hauv ib daim duab peb sab yog 180 °. Ib daim duab peb sab sib npaug muaj peb sab sib npaug thiab kaum. Daim duab peb sab isosceles tuaj yeem kos rau ntau txoj hauv kev.
Muaj pes tsawg hom tshuaj lom neeg muaj pes tsawg leeg?
Hauv chaw ua haujlwm muaj ob hom kev phom sij: kev noj qab haus huv thiab kev phom sij ntawm lub cev