Kub hnyav dua cov hlau lead … Yog li ntawd kub hnyav 19.3 npaug los yog (19.3 x 8.3 lb) txog 160 phaus ib nkas loos. Txawm hais tias kub muaj qhov ntom ntom 19.3 npaug ntau dua li dej thiab yog ib qho ntawm cov khoom ntom ntom tshaj plaws hauv ntiaj teb, muaj cov khoom uas muaj qhov ntom ntom ntau dua.
Puas yog ib yam hnyav dua kub?
Teb 1: Osmium yog cov hlau ntom tshaj plaws! Ntau tus neeg paub txog cov hmoov txhuas (11.3 kg / L), tab sis osmium yog ob npaug li ntom (22.6 kg / L)! … Qee lwm yam hlau hnyav xws li tungsten thiab kub (19.3 kg/L), uas yuav luag ntom li osmium.
Yuav ua li cas hnyav dua los yog nyiaj?
Nyiaj tsawg dua cov hlau lead, tab sis tsis yog irredeemably li. Cov nyiaj yog kwv yees li 7.5% tsawg dua cov hlau lead - yog li nws tseem tuaj yeem ua lub mos txwv zoo rau qhov ntawd.
Puas yog cov hlau hnyav tshaj plaws?
Hlau Hnyav. Cov hlau hnyav tshaj plaws yog osmium, uas muaj, ntau rau ntau, ze li ob npaug ntawm qhov hnyav ntawm cov hlau lead. Qhov tshwj xeeb lub ntiajteb txawj nqus ntawm kub yog hais txog 19 1/4, thaum lub osmium yog yuav luag 22 1/2.
Puas yog txhuas hnyav?
Lead yog cov khoom siv tshuaj nrog lub cim Pb (los ntawm Latin plumbum) thiab atomic naj npawb 82. Nws yog ib qho hnyav hlau uas yog denser dua li cov khoom siv feem ntau. Lead yog mos thiab malleable, thiab kuj muaj ib tug kuj tsis tshua muaj melting point.
