Video: Dab tsi yog cov txheej txheem tsim nyog rau kev ntxuav cov cuvettes?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Ua ntej siv, cuvettes yuav tsum tau ntxuav kom tshem tawm cov seem seem. Yog hais tias cov cuvettes tshwm huv si, tsuas yog yaug ob peb zaug nrog distilled dej , tom qab ntawd ib zaug nrog acetone (kom tsis txhob muaj dej) thiab tawm mus rau huab cua qhuav nyob rau hauv ib qho chaw inverted (xws li ntawm cov ntaub so ntswg) ua ntej siv.
Yog li ntawd, koj yuav ua li cas ntxuav lub cuvette?
Cuvette Ntxuav Kev daws 3: Zoo rau Aqueous Solutions Ntxuav nrog nitric acid, 50% yog zoo heev, rau 10 feeb. Ua tib zoo tshem tawm cov kua qaub. Ces ntxuav peb zaug nrog dej huv. Thaum kawg yaug nrog acetone, tshem tawm tshaj thiab cia lub kub cua qhuav.
Tsis tas li ntawd, vim li cas koj thiaj li yuav tsum so lub cuvette nrog lint dawb cov ntaub so ntswg ua ntej ntsuas? Kov cov hlab no nrog kev saib xyuas zoo kom khaws ob qho tib si sab hauv thiab sab nraud huv si thiab dawb ntawm khawb. Ntxuav lub Cuvette : So sab nraum lub kub nrog a lint - dawb , mos ntaub so ntswg (ib qho Shurwipe lossis Accuwipe) kom tshem tawm cov dej noo lossis cov ntiv tes tawm ntawm sab nraud.
Tsis tas li ntawd, vim li cas nws tseem ceeb heev kom ntxuav lub cuvette?
Tsim nyog ntxuav tu yog heev tseem ceeb . Cov seem ntawm qhov kev sim yav dhau los tuaj yeem ua rau kev ua haujlwm tsis zoo, ntsuas tsis raug thiab yuav nkim koj lub sijhawm thiab koj cov qauv. Tsim nyog ntxuav ntawm koj cov cuvettes yuav ua rau kom lawv lub neej muaj txiaj ntsig thiab muab cov txiaj ntsig zoo sib xws.
Dab tsi yog units rau absorbance?
Absorbance yog ntsuas hauv absorbance units (Au), uas cuam tshuam rau kev xa tawm raws li pom hauv daim duab 1. Piv txwv li, ~ 1.0Au yog sib npaug rau 10% transmittance, ~ 2.0Au yog sib npaug rau 1% transmittance, thiab lwm yam nyob rau hauv ib tug logarithmic sib.
Pom zoo:
Cov txheej txheem ntawm kev tsim cov kev daws teeb meem yog dab tsi?
Kev daws yog tsim thaum ib yam khoom hu ua thesolute 'dissolves' rau hauv lwm yam khoom hu ua hnyav.Dissolving yog thaum lub solute tawg los ntawm ib tug loj siv lead ua ntawm molecules mus rau ntau me me los yog ib tug molecules. Lawv ua qhov no los ntawm rub tawm cov ions thiab tom qab ntawd ncig cov ntsev molecules
Dab tsi yog qhov ua rau muaj kev hloov pauv hauv kev tswj cov txheej txheem txheeb cais?
'Ib qho laj thawj' kev hloov pauv yog qhov kev hloov pauv uas xav tias yuav muaj nyob rau hauv cov txheej txheem ruaj khov thiab feem ntau yog vim qhov yuam kev xws li kev kaw lossis ntsuas qhov yuam kev. Cov peev txheej ntawm qhov yuam kev no yuav tshwm sim tsis hais txog lwm yam, thiab yuav ua rau muaj qhov sib txawv me ntsis ntawm kev ntsuas
Cov xim dab tsi yog cov hlwb feem ntau ua ntej siv thawj cov xim rau cov txheej txheem Gram stain?
Ua ntej, siv lead ua violet, thawj stain, yog siv rau lub tshav kub-tso smear, muab tag nrho cov hlwb xim liab
Dab tsi yog cov txheej txheem ntawm kev sib txuas monomers los tsim cov saw ntev?
Feem ntau cov roj ntsha molecules loj heev thiab tsim los ntawm kev sib sau me me molecules, los yog monomers, rau hauv cov saw ntev. Cov txheej txheem ntawm kev sib txuas cov monomers, hu ua lub cev qhuav dej condensation, suav nrog kev tshem tawm ob lub atoms hydrogen thiab ib qho oxygen atom los tsim dej
Dab tsi yog txheej txheem spontaneous thiab non-spontaneous txheej txheem?
Cov txheej txheem spontaneous yog ib qho uas tshwm sim yam tsis muaj kev cuam tshuam ntawm sab nraud. Ib txoj kev uas tsis yog tshwm sim yuav tsis tshwm sim yog tias tsis muaj kev cuam tshuam ntawm sab nraud