Cob alt yog ib qho lustrous nyuaj silvery hlaubelongs rau ib pawg hu ua "kev hloov hlau". Nws yog ib qho ntawm 3 ferromagnetic hloov pauv cov ntsiab lus nrog rau hlau thiab npib tsib xee.
Yog cob alt yog hlau lossis hlau?
Cob alt (Co) yog a hlau nrog tus lej atomic 27. Nrog rau npib tsib xee thiab hlau, cob alt yog ib txwm muaj ferromagnetic. Nws qhov ceev ntawm 8.8g / m³ zoo ib yam li npib tsib xee (8.91g / m³) tab sis hnyav dua hlau. Cob alt tiv taus qhov kub thiab txias ntawm 1493 ° C.
Puas pom cob alt hauv daim ntawv ntshiab?
PURE COBALT TSIS MUAJ NUJ NQIS RAU LUB NTIAJ TEB Txawm tias koj tuaj yeem nrhiav tau cob alt nyob txhua qhov chaw-hauv av, hauv cov pob zeb hauv av, thiab txawm tias nyob rau hauv crusts. cov seafloor-nws yeej ib txwm ua ke nrog lwm cov ntsiab lus xws li npib tsib xee, tooj liab, hlau, los yog arsenic, xws li nyob rau hauv lub ci crimson arsenate ntxhia erythrite.
Puas cob alt ua mob rau tib neeg?
Nws tuaj yeem ua mob rau lub qhov muag, tawv nqaij, lub siab, thiab lub ntsws. Kev raug cob alt tuaj yeem ua rau mob qog noj ntshav. Cov neeg ua haujlwm yuav raug mob los ntawm kev raug cob alt thiab cov khoom siv cob alt. Qib ntawm kev puas tsuaj nyob ntawm qhov koob tshuaj, lub sijhawm, thiab kev ua haujlwm tiav.
Vim li cas cob alt tsawg heev?
Nws tsis tshua muaj neeg? Thaum peb tab tom tham txog mined cob alt, cov khoom siv raw khoom feem ntau yog los ntawm [Democratic Republic of] Congo. … Yog tias cov kev lag luam no raug kev txom nyem los ntawm tus nqi qis, thiab xav tau, nws nyuaj dua los nqis peev hauv cob alt ntau lawm.
