Video: Dab tsi yog qhov molar absorptivity tas li ntawm crystal violet?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Molar hnyav: 407.99 g·mol−1
Ua li no, koj yuav ua li cas xam molar absorptivity ntawm crystal violet?
x l x c, qhov twg A yog tus nqi ntawm lub teeb absorbed los ntawm tus qauv rau ib tug muab wavelength, ? yog cov molar absorptivity , l yog qhov kev ncua deb uas lub teeb mus los ntawm kev daws teeb meem, thiab c yog qhov concentration ntawm hom absorbing ib chav tsev ntim.
Ib tug kuj tseem nug, dab tsi yog qhov kev txiav txim siab m nrog rau qhov concentration ntawm crystal violet? Yog li ntawd, lub xaj ntawm tshuaj tiv thaiv ( m) nrog kev hwm rau siv lead ua violet yog thawj. Absorbance yog proportional rau cov concentration ntawm crystal violet (A = εl[CV+]) thiab siv tau los hloov concentration Thaum npaj cov ntaub ntawv (A ≈ [CV+]).
Hauv qhov no, txoj cai lij choj ntawm fading ntawm crystal violet yog dab tsi?
Cov raws txoj cai rau qhov tshuaj tiv thaiv no yog nyob rau hauv daim ntawv: tus nqi = k[CV+]m[OH–] ,k yog tus nqi tsis tu ncua rau cov tshuaj tiv thaiv, m yog qhov kev txiav txim nrog hwm siv lead ua violet (CV+), thiab n yog qhov kev txiav txim ntawm hydroxide ion.
Puas yog Crystal Violet thawj xaj?
Discoloration ntawm crystal violet yog thawj xaj nrog rau cov concentration ntawm siv lead ua violet thiab hydroxyl ion concentration.
Pom zoo:
Dab tsi yog qhov txawv ntawm qhov pom tseeb qhov loj thiab qhov ntsuas qhov ntsuas qhov tseeb?
Dab tsi yog qhov txawv ntawm qhov pom tseeb thiab qhov tseeb? Pom meej qhov loj npaum li cas yog qhov ci ntawm lub hnub qub tshwm los ntawm lub ntiaj teb thiab nyob ntawm qhov ci thiab qhov deb ntawm lub hnub qub. Qhov loj npaum li cas yog qhov ci ntawm lub hnub qub yuav tshwm sim los ntawm tus qauv nyob deb
Dab tsi yog qhov txawv ntawm qhov sib txawv ntawm qhov sib txawv thiab qhov sib txawv ntawm qhov ntab?
Integers thiab floats yog ob yam sib txawv ntawm cov ntaub ntawv tus lej. Ib tus lej (feem ntau hu ua anint) yog tus lej tsis muaj tus lej lej. Float isa floating-point number, uas txhais tau hais tias nws yog tus lej uas muaj tus lej lej. Floats siv thaum xav tau ntau dua
Dab tsi yog qhov yuam kev loj tshaj plaws yog tias Irina ntsuas qhov ntev ntawm nws lub qhov rais li 3.35 feet qhov yuam kev loj tshaj plaws yog taw?
Kev daws: Qhov yuam kev loj tshaj plaws hauv kev ntsuas ntsuas tau txhais tias yog ib nrab ntawm qhov ntsuas ntsuas
Dab tsi yog qhov flux los ntawm lub voos xwmfab ntawm sab yog tias tus nqi ntawm Q yog ntawm ib qho ntawm nws lub ces kaum?
Raws li peb paub tias, tag nrho cov flux los ntawm tus nqi q yog q / ε 0 (Gauss txoj cai). Yog hais tias tus nqi yog nyob rau ntawm lub ces kaum ntawm lub voos xwmfab, ib co ntawm cov flux nkag mus rau hauv lub voos xwmfab thiab tawm los ntawm ib co ntawm nws lub ntsej muag. Tab sis qee qhov flux tsis nkag mus rau hauv lub voos xwmfab. Qhov 1/8th no yuav muab faib ua 3 ntu dua
Dab tsi yog qhov txawv ntawm instantaneous thiab nruab nrab ceev dab tsi yog qhov piv txwv loj tshaj ntawm kev ceev ceev?
Qhov nruab nrab ceev yog qhov ceev nruab nrab ntawm lub sijhawm. Instantaneous ceev yuav yog qhov ceev txhua qhov muab tam sim ntawd hauv lub sijhawm ntawd, ntsuas nrog lub ntsuas ntsuas lub sijhawm