Video: Lub mole ntawm tooj liab yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Los ntawm koj Lub Sijhawm Sijhawm peb kawm qhov ntawd mole ntawm tooj liab , 6.022 × 1023 ib tus neeg tooj liab atoms muaj qhov hnyav ntawm 63.55⋅g. Thiab yog li peb siv MASS ntawm cov qauv tshuaj los xam cov NUMBER ntawm atoms thiab molecules.
Yog li ntawd, pes tsawg atoms nyob rau hauv ib mole ntawm tooj liab?
Kev sib raug zoo ntawm molecular (formula) mass thiab molar mass Page 4 4 • Kom tau ib mole ntawm tooj liab atoms (6.02 x 1023 atoms ua ), hnyav tawm 63.55 g tooj. Molar mass (M) ntawm ib yam khoom yog qhov loj ntawm ib qho mole ntawm cov chaw (atoms, molecules, lossis formula units) ntawm cov khoom.
Tom qab ntawd, lo lus nug yog, pes tsawg grams muaj nyob rau hauv 1 mole ntawm tooj liab atoms? 63,546g ua
Ib yam li ntawd, qhov loj ntawm 3.5 moles ntawm tooj liab yog dab tsi?
Teb thiab piav qhia: Pawg ntawm Cu hauv grams tuaj yeem muab tau los ntawm kev sib npaug ntawm pawg hauv amu nrog Avogadro tus lej. Yog li ntawd, lub qhov hnyav ntawm 3.5 moles Cu yog 3.69 × 10-22 grams 3.69 × 10 - 22 grams.
Dab tsi yog mole hauv science?
Mole , kuj spelled mol, hauv chemistry, tus qauv kev tshawb fawb chav ntsuas ntsuas qhov loj ntawm cov khoom me me xws li atoms, molecules, lossis lwm yam hais.
Pom zoo:
Muaj pes tsawg atoms nyob rau hauv 1 mole ntawm tooj liab?
Lub tswv yim 2. Kev sib raug zoo ntawm molecular (formula) mass thiab molar mass Page 4 4 • Kom tau ib mole ntawm tooj liab atoms (6.02 x 1023 atoms), hnyav 63.55 g tooj liab. Molar mass (M) ntawm ib yam khoom yog qhov loj ntawm ib qho mole ntawm cov chaw (atoms, molecules, lossis formula units) ntawm cov khoom
Qhov loj ntawm 3.5 moles ntawm tooj liab yog dab tsi?
Qhov loj ntawm Cu hauv grams tuaj yeem tau los ntawm kev sib npaug ntawm qhov loj hauv amu nrog Avogadro tus lej. Yog li ntawd, qhov loj ntawm 3.5 moles ntawm Cu yog 3.69 × 10 − 22 grams 3.69 × 10 − 22g ua
Dab tsi yog qhov txawv ntawm Biot tooj thiab Nusselt tooj?
Cov lus teb tsis ntev los no. Biot tooj siv thermal conductivity ntawm lub cev (tsis yog kua), whereas Nusselt tooj siv thermal conductivity ntawm cov kua. Qhov sib txawv ntawm Biot thiab Nusselt tus naj npawb yog nyob rau hauv lub ntsiab lus ntawm tshav kub hloov coefficient, uas yog txhais raws li: h = -k (dT / dn) w / (Tw-T0)
Yuav ua li cas cov khoom siv caj ces hauv txhua lub xov tooj tshiab tsim los ntawm kev faib tawm ntawm tes sib piv nrog cov khoom siv caj ces hauv lub xov tooj qub?
Mitosis tshwm sim nyob rau hauv ob lub nuclei uas zoo tib yam rau thawj nucleus. Yog li, ob lub hlwb tshiab tsim tom qab kev faib tawm ntawm tes muaj tib yam khoom siv caj ces. Thaum lub sij hawm mitosis, chromosomes condense los ntawm chromatin. Thaum saib nrog lub microscope, chromosomes pom nyob rau hauv lub nucleus
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