Dej muaj peev xwm kub tshaj plaws ntawm cov kua. Cov cua kub tshwj xeeb txhais tau hais tias qhov kub ntawm ib gram ntawm cov khoom yuav tsum nqus los yog poob kom hloov nws qhov kub ntawm ib degree Celsius. Rau dej, tus nqi no yog ib calorie, lossis 4.184 Joules.
Cov kua dej twg muaj qhov kub siab tshaj?
Superheated dej yog cov dej ua kua hauv qhov siab ntawm qhov kub ntawm qhov kub ib txwm kub, 100 ° C (212 ° F) thiab qhov kub thiab txias, 374 ° C (705 ° F).
Yam tshuaj twg muaj qhov kub siab tshaj plaws?
Khoom ntawm cov ntsiab lus
Ob lub ntsiab lus kub ntawm rhenium thiab tungsten tshaj 5000 K ntawm tus qauv siab; vim tias nws nyuaj rau ntsuas qhov kub thiab txias heev yam tsis muaj kev tsis ncaj ncees, ob qho tib si tau hais hauv cov ntaub ntawv uas muaj qhov kub siab dua.
Puas dej ib txwm boil ntawm 100 degrees?
Peb txhua tus kawm hauv tsev kawm ntawv tias dej ntshiab ib txwm boils ntawm 100°C (212°F), nyob rau hauv ib txwm atmospheric siab. Zoo li xav tsis thoob ntau yam uas "txhua tus paub", qhov no yog lus dab neeg. … Thiab tshem tawm cov huab cua hauv dej tuaj yeem yooj yim nce nws qhov kub thiab txias li ntawm 10 degrees centigrade.
Yuav ua li cas nce qhov kub?
Cov tshuaj uas muaj peev xwm hydrogen daim ntawv cog lus yuav muaj cov ntsiab lus kub siab dua li cov tebchaw uas tuaj yeem cuam tshuam los ntawm London dispersion rog. Ib qho ntxivKev txiav txim siab rau cov ntsiab lus boiling muaj qhov vapor siab thiab volatility ntawm cov compound. Feem ntau, qhov sib xyaw ua ke ntau dua, qhov qis dua nws qhov kub.
