Qhov no yuav tsum yog cov tshuaj hloov pauv, vim tias cov tshuaj tshiab-"fog"-forms." Qhov tseeb, dej khov qhuav dhau los hloov lub cevthaum nws sublimates los ntawm cov khoom mus rau lub xeev gaseous yam tsis tau yaj ua ntej ua kua. Tib cov pa roj carbon dioxide tseem nyob tam sim no, nws nyuam qhuav dhau ib theem hloov mus ua cov pa tsis muaj xim.
Puas sublimation yog tshuaj lossis hloov lub cev?
Lub sij hawm sublimation yog hais txog lub cev hloov pauv ntawm lub xeevthiab tsis yog siv los piav qhia txog kev hloov pauv ntawm cov khoom rau cov roj hauv cov tshuaj tiv thaiv. Piv txwv li, kev sib cais ntawm cov cua sov ntawm cov khoom ammonium chloride rau hauv hydrogen chloride thiab ammonia tsis yog sublimation tab sis muaj tshuaj tiv thaiv.
Kev hloov pauv dab tsi tshwm sim thaum cov dej khov qhuav qhuav?
Nws sublimates lossis hloov xeev los ntawm cov khoom rau rojntawm qhov kub ntawm -78 degrees Celsius nyob rau hauv ib txwm atmospheric siab ntawm 1 atm. Vim nws qhov kub tsis tshua muaj siab nyob rau hauv ib txwm atmospheric siab, nws yog ib qho tseem ceeb raws li ib tug coolant. Thaum cov dej khov qhuav muab tso rau hauv dej sov, huab cua tsim.
Dej ice sublimating yog dab tsi?
Sublimation thiab lub voj voog dej:
Sublimation yog kev hloov pauv ntawm cov khoom thiab cov roj theem ntawm cov teeb meem, tsis muaj cov kua nruab nrab theem. … "Dry ice" yog tiag tiag khoom khov, khov carbon dioxide, uas tshwm sim rau sublimate, lossis tig mus rau roj, ntawm qhov txias txias -78.5 ° C (-109.3 ° F).
Puas yog sublimation ntawm cov dej khov qhuav thim rov qab?
Nws yog kev hloov pauv hloov pauv Piav: … Cov txheej txheem no thim rov qab zoo li txoj hauv kev uas cov tshuaj hloov pauv mus rau cov pa ncaj qha, cov pa roj kuj tuaj yeem hloov mus rau hauv cov ntaub ntawv los ntawm kev nthuav tawm lawv mus rau qhov tsis tshua muaj siab. qhov kub thiab txias. Ib qho piv txwv ntawm qhov no: Co2 (tseem hu ua dej khov qhuav) solidifies yog tias raug kub hnyiab heev.
