Cov txheej txheem:
- Koj paub li cas cov isotope muaj ntau dua?
- Qhov twg muaj ntau dua hauv ntiaj teb cov pob zeb bromine-79 lossis bromine 80?
- Qhov twg ntau dua bromine-79 lossis bromine 81?
- Qhov twg ntawm ob isotopes ntawm bromine muaj ntau dua?
Video: Qhov twg bromine isotope muaj ntau dua?
2024 Tus sau: Fiona Howard | [email protected]. Kawg hloov kho: 2024-01-10 06:38
Isotopes feem ntau: Br-79 (50.7 feem pua ntawm ntuj abundance), Br-81 (49.3 feem pua ntawm ntuj abundance.
Koj paub li cas cov isotope muaj ntau dua?
Txhawm rau txiav txim siab ntau tshaj plaws isotopic daim ntawv ntawm ib lub caij, piv cov isotopes rau qhov hnyav nruab nrab ntawm lub rooj zaumPiv txwv li, peb lub isotopes hydrogen (pom saum toj no) yog H. -1, H-2, thiab H-3. Lub atomic loj lossis qhov hnyav nruab nrab ntawm hydrogen yog nyob ib ncig ntawm 1.008 amu (saib dua ntawm lub rooj zaum).
Qhov twg muaj ntau dua hauv ntiaj teb cov pob zeb bromine-79 lossis bromine 80?
Qhov nruab nrab atomic mass yog 79.904, uas txhais tau tias muaj ntau dua Bromine - 80 atoms dua Bromine - 79 atoms Txij li 79.904 yog ze dua rau 80.
Qhov twg ntau dua bromine-79 lossis bromine 81?
Teeb meem: Lub ntsiab lus bromine muaj atomic hnyav ntawm 79.9 thiab muaj ob lub isotopes ruaj khov bromine-79 thiab bromine-81. Cov isotope bromine-79 muaj qhov loj ntawm 78.9 amu thiab ib feem pua ntawm ntuj abundance ntawm 50.5%. Cov isotope bromine-81muaj ib feem pua ntawm cov khoom muaj nqis ntawm 49.5%.
Qhov twg ntawm ob isotopes ntawm bromine muaj ntau dua?
Bromine muaj ob qhov tshwm sim ib txwm muaj isotopes (Br-79 thiab Br-81) thiab atomic mass ntawm 79.904 amu. Qhov loj ntawm Br-81 yog 80.9163 amu, thiab nws qhov kev nplua nuj yog 49.31%.
Pom zoo:
Vim li cas qhov qiv nyiaj tsis muaj kev ruaj ntseg muaj ntau dua?
Vim tias cov qiv nyiaj tsis muaj kev ruaj ntseg tsis tau them nyiaj rov qab, lawv muaj kev pheej hmoo rau cov qiv nyiaj. Yog li ntawd, cov nyiaj qiv no feem ntau tuaj nrog cov paj laum siab dua . Vim li cas qhov qiv nyiaj tsis muaj kev nyab xeeb muaj tus nqi paj siab dua li qiv nyiaj ruaj ntseg?
Vim li cas cov txiv ntoo tsis muaj roj ntau calorie ntau ntau?
"Unfrosted Pop-Tarts muaj ib qho me ntsis thicker crust los them rau qhov tsis muaj frosting, ua rau ob peb calorie ntau ntau rau ib qho kev pabcuam, "Kellogg tus neeg sawv cev hais rau Quartz hauv ib qho email . Pob Pop Tarts noj qab nyob zoo?
Puas yog kev sau ntau ntau lossis ntau yam?
Cov npe suav tuaj yeem suav tau lossis suav tsis tau. Feem ntau, feem ntau siv, cov ntsiab lus,ntau daim ntawv kuj tseem yuav muaj cov ntsiab lus Txawm li cas los xij, hauv cov ntsiab lus tshwj xeeb, ntau daim ntawv kuj tuaj yeem yog cov khoom sib xws xws li.
Qhov twg ntau dua ntawm qhov kawg ntawm cov hlab ntsha?
Capillary Hydrostatic Pressure (P C ) Lub siab no ua rau cov kua dej tawm ntawm lub capillary (piv txwv li, pom), thiab siab tshaj ntawm qhov arteriolar kawg ntawm capillary thiab qis tshaj ntawm venular kawg . Qhov twg siab dua ntawm qhov kawg ntawm cov hlab ntsha?
Qhov twg yog qhov ua rau muaj kev huam yuaj ntau tshaj plaws?
ntshav siab. Koj tus kws kho mob tuaj yeem hu nws tias mob ntshav siab. Nws yog qhov ua rau mob stroke loj tshaj plaws. Yog tias koj cov ntshav siab feem ntau yog 140/90 lossis siab dua, koj tus kws kho mob yuav tham txog kev kho mob nrog koj .
