thawj cov roj kom khov yuav yog dej vapor. Qhov no yog vim li cas huab cua qhuav heev nyob rau hauv qhov chaw txias heev. Tom qab ntawd carbon dioxide yuav khov, thiab tom qab ntawd nitrogen. Qhov kawg gases kom khov yuav yog oxygen thiab argon.
Ntawm twg yog nitrogen khov?
Raws li cov kua nitrogen boils sai dua thiab sai dua, nws txias cov kua nitrogen ntxiv kom txog thaum nws thiaj li mus txog qhov khov ntawm -346.
Nws puas tuaj yeem khov oxygen?
Cov pa oxygen muaj qhov ntom ntom ntawm 1, 141 g / L (1.141 g / ml), me ntsis denser dua li cov dej ua kua, thiab yog cryogenic nrogkhov taw tes ntawm 54.36 K (−218.79 °C; −361.82 °F) thiab qhov kub ntawm −182.96 °C (−297.33 °F; 90.19 K) ntawm 1 bar (15 psi).
Vim li cas nitrogen boils ua ntej?
Kua nitrogen, ntawm qhov tod tes, boils ntawm qhov txias dua. Cov kua nitrogen boils ntawm -320 degrees. Qhov ntawd txhais tau tias sai li sai tau thaum LN2 tawm ntawm peb cov neeg tuav tshwj xeeb thiab tsoo huab cua, nws tam sim vaporizes vim huab cua nyob ib puag ncig nws txias heev. … Nws boils thiab dhau los ua cov pa roj nitrogen, ib qho tsis muaj teeb meem kiag li.
Cov kev mob tshwm sim ntawm cov kua nitrogen yog dab tsi?
Cov kua dej qis heev tuaj yeem ua rau frostbite loj lossis qhov muag puas thaum sib cuag. Cov tsos mob ntawm frostbite suav nrog kev hloov ntawm cov tawv nqaij mus rau xim dawb lossis greyish daj thiabmob tom qab kev sib cuag nrog kua nitrogen yuav sai sai. Cov khoomnyob rau hauv kev sib cuag nrog kua nitrogen ua txias heev.
