Dab tsi yog theem ib txwm nyob hauv Americium?

Video: Dab tsi yog theem ib txwm nyob hauv Americium?

2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36

Lub npe	Asmeskas
Melting Point	994.2°C dej
Boiling Point	2607.0°C kub
Qhov ntom	13.6 g ib cubic centimeter
Theem ib txwm	Synthetic

Ua li no, pes tsawg tus protons hauv Americium?

Ib tug kuj yuav nug, americium nqi npaum li cas? Cov americium oxide siv hauv cov pa luam yeeb raug nqi ib ncig $1500 ib gram - piv qhov no nrog tus nqi kub tam sim no ntawm ib ncig ntawm $ 30 ib gram. Muaj ib tug zoo irony uas lub caij muaj npe tom qab lub ntiaj teb no tus nplua nuj, feem ntau noj-taw qhia lub teb chaws tsuas yog feem ntau siv nyob rau hauv tsawg heev.

Ib yam li ntawd, nws raug nug, dab tsi yog americium siv hauv?

Asmeskas tuaj yeem tsim hauv kilogram kom muaj nuj nqis thiab muaj qee qhov kev siv. Nws yog siv hauv Cov pa luam yeeb ntes thiab tuaj yeem ua tau siv li portable qhov chaw ntawm gamma rays. Asmeskas -241, nrog ib nrab-lub neej ntawm 432.2 xyoo, yog siv hauv cov khoom no vim tias nws yooj yim dua los tsim cov qauv ntshiab ntawm cov isotope.

Americium zoo li cas?

Yam ntxwv: Americium yog ib tug silvery-dawb heev radioactive hlau uas muaj ib tug ceev zoo ib yam li coj. Nws tarnishes maj mam nyob rau hauv cov huab cua qhuav ntawm chav tsev kub. Isotope ²⁴¹Am, feem ntau isotope, decays rau ²³⁷Np, emitting alpha thiab gamma tawg⁽¹⁾.

Pom zoo:

Ob theem tseem ceeb ntawm photosynthesis yog dab tsi thiab txhua theem tshwm sim nyob qhov twg?

Ob theem ntawm photosynthesis: Photosynthesis yuav siv sij hawm qhov chaw nyob rau hauv ob theem: lub teeb-dependent kev tshwm sim thiab lub Calvin voj voog (lub teeb-yooj yim kev xav). Lub teeb-nyob ntawm cov tshuaj tiv thaiv, uas tshwm sim hauv thylakoid daim nyias nyias, siv lub teeb lub zog los ua ATP thiab NADPH