Cov txheej txheem:
Video: Dab tsi yog cov complexes thiab ligands?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov ions lossis molecules uas khi rau kev hloov pauv-hlau ions los ua cov no complexes hu ua ligands (los ntawm Latin, "kom khi lossis khi"). Txawm tias kev sib koom tes complexes tshwj xeeb tshaj yog nyob rau hauv chemistry ntawm cov hlau hloov pauv, qee cov pab pawg tseem ceeb kuj tsim complexes.
Cov lus nug tseem yog, dab tsi yog kev sib koom ua ke siv rau?
Kev sib koom ua ke suav nrog cov tshuaj xws li vitamin B12, hemoglobin, thiab chlorophyll, dyes thiab pigments, thiab catalysts siv hauv npaj cov organic. Ib daim ntawv thov loj ntawm kev sib koom ua ke yog lawv siv raws li catalysts, uas pab hloov tus nqi ntawm cov tshuaj tiv thaiv.
Ib sab saum toj no, koj yuav txheeb xyuas ligands hauv complex ions li cas? Sau tus (Line) Formula ntawm Complex:
- Txheeb xyuas qhov nruab nrab hlau ion.
- Txheeb xyuas lub xeev oxidation ntawm lub hauv paus hlau ion (pom hauv Roman tus lej parantheses)
- Txheeb xyuas cov ligands.
- Txheeb xyuas tus lej ntawm ligands.
- Xam cov nqi tag nrho ntawm cov ligands.
- Xam cov nqi ntawm cov ion complex.
Ib yam li ntawd ib tug yuav nug, dab tsi yog hom ligands?
Hom ntawm Ligands
- Unidentate ligands: Ligands nrog tsuas yog ib qho pub dawb atom, piv txwv li. NH3, Cl-, F- lwm.
- Bidentate ligands: Ligands nrog ob lub atoms pub dawb, piv txwv li. ethylenediamine, C2O42-(oxalate ion) thiab lwm yam.
- Tridentate ligands: Ligands uas muaj peb lub atoms pub dawb rau ib ligand, piv txwv li. (dien) Diethyl triamine.
Dab tsi yog cov complexes hauv chemistry?
complex, nyob rau hauv chemistry , ib yam khoom, yog ib qho ion lossis ib qho hluav taws xob nruab nrab molecule, tsim los ntawm kev sib koom ua ke ntawm cov khoom yooj yim (raws li cov tebchaw lossis ions) thiab tuav ua ke los ntawm cov rog uas yog tshuaj (piv txwv li, nyob ntawm cov khoom tshwj xeeb ntawm cov qauv atomic) es tsis yog lub cev.
Pom zoo:
Dab tsi yog cov reagents xav tau rau PCR thiab dab tsi yog qhov ua haujlwm ntawm txhua tus?
Muaj tsib yam tshuaj reagents, lossis cov khoom xyaw, siv hauv PCR: qauv DNA, PCR primers, nucleotides, PCR tsis thiab Taq polymerase. Primers feem ntau yog siv nyob rau hauv khub, thiab DNA ntawm ob lub primers yog amplified thaum lub sij hawm PCR cov tshuaj tiv thaiv
Dab tsi yog European pob kws borer thiab nws cuam tshuam li cas cov pob kws nroj tsuag thiab cov noob qoob loo?
Qhov kev puas tsuaj boring tuaj yeem ua rau cov nroj tsuag tsis muaj zog txaus los ua rau cov stalk tawg tom qab lub caij, feem ntau tshwm sim hauv qab pob ntseg. Los yog nws yuav ua rau pob kws ua stunted, ua rau cov qoob loo txo qis los ntawm cov nroj tsuag tsis muaj peev xwm thauj dej thiab cov as-ham los ntawm nws cov qia puas
Dab tsi yog qhov txawv ntawm Marine West Coast huab cua thiab dab tsi yog lub luag haujlwm rau cov yam ntxwv ntawd?
Cov ntsiab lus ntawm Marine West Coast Qhov kev nyab xeeb ntawm cov yam ntxwv tseem ceeb yog lub caij ntuj sov me me thiab lub caij ntuj no thiab cov nag lossis daus txhua xyoo. Qhov ecosystem no muaj kev cuam tshuam loj heev los ntawm nws qhov ze rau ntawm ntug dej hiav txwv thiab roob. Nws yog qee zaum hu ua huab cua sab hnub poob ntug dej hiav txwv lossis dej hiav txwv huab cua
Dab tsi yog txhais los ntawm lub sij hawm dissociation thiab dab tsi yog ib qho piv txwv ntawm cov khoom uas dissociates?
Dissociation, nyob rau hauv chemistry, sib cais ntawm ib yam khoom mus rau hauv atoms los yog ions. Thermal dissociation tshwm sim ntawm qhov kub thiab txias. Piv txwv li, hydrogen molecules (H 2) dissociate rau hauv atoms (H) ntawm kub heev; ntawm 5,000 ° K txog 95% ntawm cov molecules hauv cov qauv ntawm hydrogen yog dissociated rau hauv atoms
Peb lub neej yog dab tsi thiab lawv cov yam ntxwv tshwj xeeb yog dab tsi?
Peb lub npe suav nrog: Archaea - cov npe qub tshaj plaws, cov kab mob qub. Cov kab mob - tag nrho lwm cov kab mob uas tsis suav nrog hauv Archaea domain. Eukarya - tag nrho cov kab mob uas muaj eukaryotic los yog muaj cov kab mob sib txuas thiab cov nuclei