Cov txheej txheem:
- Peb siv burette qhov twg?
- Thaum twg yuav tsum siv lub burette?
- Kev siv burette hauv titration yog dab tsi?
- Vim li cas peb thiaj siv burette es tsis yog pipette?
Video: Lub burette siv rau qhov twg?
2024 Tus sau: Fiona Howard | [email protected]. Kawg hloov kho: 2024-01-10 06:38
Burette yog ib lub tshuab kuaj mob uas nquag siv txhawm rau faib thiab ntsuas qhov sib txawv ntawm cov kua lossis qee zaum roj hauv cov tshuaj lom neeg thiab kev sim tshuaj tshwj xeeb rau cov txheej txheem titration hauv kev ntsuas ntsuas volumetric hauv xyoo 1828, Fab Kis kws tshuaj Joseph Louis Gay-Lussacthawj zaug siv titre ua ib qho lus qhia (titrer), lub ntsiab lus "kom txiav txim siab qhov concentration ntawm cov khoom hauv ib qho piv txwv". Volumetric tsom xam keeb kwm nyob rau hauv lig 18th-xyoo pua Fabkis. https://en.wikipedia.org › wiki › Titration
Titration - Wikipedia
. Burettes tuaj yeem teev tau raws li lawv qhov ntim, kev daws teeb meem, thiab qhov tseeb ntawm kev xa tawm.
Peb siv burette qhov twg?
A burette yog lub ntsuas ntim ntim iav uas yog siv hauv analytical chemistry rau qhov tseeb ntawm cov kua, tshwj xeeb tshaj yog ntawm ib qho ntawm cov reagents hauv titration. Lub raj burette nqa cov qhab nia kawm tiav los ntawm qhov uas qhov ntim ntawm cov kua tuaj yeem txiav txim siab.
Thaum twg yuav tsum siv lub burette?
burette, kuj sau buret, kuaj apparatus siv hauv kev tshuaj xyuas kom muaj nuj nqis los ntsuas qhov ntim ntawm cov kua lossis roj. Nws muaj lub raj iav tiav nrog lub stopcock (tig ntsaws, lossis spigot) ntawm ib kawg.
Kev siv burette hauv titration yog dab tsi?
Acid-base titrations yog siv txhawm rau txiav txim siab ntawm cov qauv ntawm cov kua qaub lossis cov hauv pausthiab tau nqa tawm siv cov khoom siv hu ua burette. Nws yog ib tug ntev, iav raj nrog ib tug kais ntawm qhov kawg uas yuav siv tau los ua tib zoo ntxiv tee dej rau ib qho kev sim tshuaj.
Vim li cas peb thiaj siv burette es tsis yog pipette?
Lawv ob leeg muaj gradations los ntsuas kom muaj nuj nqis ntawm cov tshuaj. Thaum burette yog siv los xa cov tshuaj tov nrog ib qho kev paub zoo rau hauv lub khob, pipette yog siv los ntsuas qhov ntau ntawm cov tshuaj ntsuam xyuas- cov tshuaj substrate uas nws cov concentration yog txiav txim siab.
Pom zoo:
Qhov twg yog qhov siv rau qhov luam tawm lossis tsis tau tshaj tawm?
A citation yog ib qho ntaub ntawv siv rau ib qho kev luam tawm lossis tsis tau tshaj tawm qhov chaw uas koj tau sab laj thiab tau txais cov ntaub ntawv los ntawm thaum sau koj cov ntawv tshawb fawb . Yuav ua li cas hais txog qhov tsis tau tshaj tawm?
Qhov twg siv lub teeb pom kev rau koj lub ntsej muag?
Illuminator feem ntau siv rau lub plhu. Ua ntej, luag ntxhi kom tau lub tswv yim ntawm qhov twg koj lub puab tsaig sab sauv yog. Tom qab ntawd, siv koj cov ntiv tes los siv lub dab me me ntawm lub teeb pom kev ntawm txhua lub puab tsaig. Yog hais tias koj siv cov hmoov, nrog ib tug loj, fluffy txhuam .
Lub ntsiab lus ntawm qhov ua rau thiab qhov tshwm sim nyob qhov twg?
Caus thiab effect yog kev sib raug zoo ntawm ob yam thaum ib yam ua rau lwm yam tshwm sim Piv txwv li, yog tias peb noj zaub mov ntau dhau thiab tsis tawm dag zog, peb hnyav. Noj zaub mov tsis muaj kev tawm dag zog yog "ua rau;" Qhov hnyav nce yog "
Qhov chaw subsolar nyob rau lub Rau Hli 21 nyob qhov twg?
Ib puag ncig Lub Rau Hli 21, qhov taw qhia subsolar hits lub Tropic of Cancer, (23.5°N). Qhov no yog lub rau hli ntuj solstice, tom qab uas lub subsolar point pib mus rau sab qab teb. Tom qab lub Cuaj Hlis equinox, lub ntsiab lus subsolar txuas ntxiv mus rau sab qab teb raws li yav qab teb Hemisphere qaij rau lub hnub .
Qhov chaw ntawm cov pob txha zoo li lub ntsej muag nyob rau hauv tib neeg lub cev nyob qhov twg?
Qhov chaw ntawm cov pob txha zoo li lub ntsej muag nyob rau hauv tib neeg lub cev nyob qhov twg? Cov pob txha 'lunate' yog qhov txawv ntawm nws qhov sib sib zog nqus concavity thiab crescentic qauv. Nws nyob nyob rau hauv kab sib thooj ntawm carpals ntawm lub lateral 'scaphoid' thiab medial 'triquetral triquetral Lub triquetral pob txha (/traɪˈkwɛtrəl, -ˈkwiː-/;
