2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Nyob rau hauv qhov kev txhais lus no tus naj npawb ntawm cov photons tawg yog proportional rau qhov loj ntawm daim ntawv cog lus. Piv txwv li, cov molecules nrog loj Pi bonds xws li benzene yuav tawg ntau ntawm photons, thaumdej nrog me me ib daim ntawv cog lus ua ib qho tsis muaj zog Raman tawg.
Vim li cas dej thiaj siv tau hauv Raman?
Raman Spectroscopy tuaj yeem siv rau hauv cov kev daws teeb meem aqueous (thaum dej tuaj yeem nqus tau lub teeb infrared hnyav thiab cuam tshuam rau IR spectrum). Vim yog txoj cai xaiv sib txawv, kev co tsis ua haujlwm hauv IR spectroscopy tuaj yeem pom hauv Raman spectroscopy. Qhov no yuav pab ntxiv IR spectroscopy.
Vim li cas dej tsis ua haujlwm hauv Raman?
Raman spectrum ntawm dej tuaj yeem cuam tshuam nrog lwm yam khoom. Piv txwv li, O-H stretching hom ntawm high wavenumber range ntawm ib ncig ntawm 3400 ~ 3600cm-1 thiab hom dabtsi yog khoov ntawm ib ncig ntawm 1600cm-1 tuaj yeem cuam tshuam nrog lwm cov khoom sib koom ua ke. Feem ntau, qhov cuam tshuam ntawm dej tuaj yeem tsis quav ntsej.
Puas Raman ntes dej?
Raman tsis "pom" dejthiab tuaj yeem ntes Raman cov tshuaj tiv thaiv cov tshuaj yaj hauv dej. Qhov tseem ceeb, dej yog tib hom kua uas tsis paub los ntawm Raman. Cov qauv ua kua uas tsis xa rov qab Raman teeb liab feem ntau yuav yog dej raws thiab tej zaum yuav muaj lwm yam Raman tsis teb cov tshuaj.
Is h2o Raman active?
Tib hom kev vibrational hauv H2O yog IR thiab Raman nquag.
Pom zoo:
Covalent bonds muaj zog lossis qaug zog?
Covalent daim ntawv cog lus muaj zog- xav tau ntau lub zog los rhuav tshem lawv. Cov khoom nrog covalent bonds feem ntau tsim cov molecules uas tsis tshua muaj melting thiab boiling cov ntsiab lus, xws li hydrogen thiab dej. Vim li cas covalent bonds tsis muaj zog?
Puas cider ua rau koj qaug dej qaug cawv?
Kev sib xyaw cider thiab lager ua ke tsis tsim cov tshuaj tiv thaiv uas yuav ua rau cov neeg siv khoom haus cawv (Snakebite) tau dej sai dua. Nws yog feem ntauABV ntawm cov dej haus uas txiav txim siab sai npaum li cas tib neeg yuav qaug cawv thaum haus nws.
Puas muaj zog ntawm kev qaug zog ua hauj lwm rau wither?
Ntxoov ntxoo ntawm qhov tsis muaj zog ntawm lub cev pob txha yuav tsum muaj peev xwm qis dualub caij nyoog ntawm nws yuav muab cov nyhuv wither thaum nws tsoo koj; koj tsuas yog yuav tau kev puas tsuaj ntawm ntaj xwb. Pob potions cuam tshuam lub wither?
Puas qaug dej qaug cawv?
Yog ib tug neeg qaug cawv li ib tug neeg qaug cawv lossis qaug cawv li tus tswv, lawv qaug cawv heev. … Kuv qaug dej qaug cawv. Nws qaug cawv ua tus tswv rau kaum xya hnub. Nws ua tsis tau dab tsi. Lub ntsiab lus ntawm kev qaug dej qaug cawv yog dab tsi?
Puas hais tias qaug dej qaug cawv los?
Nws kuj yog siv los tsim ethanol. Skunks pom tau tias nyiam qhov no thiab yog tias lawv haus txaus, lawv tshwm sim qaug dej qaug cawv, li no lo lus "npau taws ua ib tug skunk" los yog hauv Portuguese, bêbado como um gambá. Puas yog qaug dej qaug cawv?
