Koj puas tuaj yeem yaj carbon dioxide?
Koj puas tuaj yeem yaj carbon dioxide?

Video: Koj puas tuaj yeem yaj carbon dioxide?

Video: Koj puas tuaj yeem yaj carbon dioxide?
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Cov pa roj carbon dioxide nyob rau hauv nws cov khoom yog lub npe hu ua "dry ice," vim hais tias nyob rau hauv tej yam kev mob nws sublimates, tig ncaj qha rau hauv roj, es yaj ua kua. Sab nraum lub chaw kuaj mob - ntawm qhov qub, qis atmospheric siab - carbon dioxide yuav sublimate, tsis yaj , thaum kub nce.

Ib yam li ntawd ib tug yuav nug, ua li cas koj thiaj li dej carbon dioxide?

Tuav lub pipette kaw nrog cov pliers, submerge nws nyob rau hauv ib tug ntshiab ntim ntawm dej sov kais dej. Lub teeb yas yuav nthuav dav raws li qhov khov CO2 thaws. Raws li lub siab ua rau siab tshaj 5.1 cua hauv cov pipette, kua CO2 yuav tshwm nyob rau hauv lub teeb.

Ib tug kuj yuav nug, qhov kub ntawm cov pa roj carbon dioxide lique? Yog li ntawm qhov siab tshaj 75.1 psi, carbon dioxide yuav ua kua raws li nws sov. Thaum qis qis, dej khov qhuav ua tsis yaj. Ntawm atmospheric siab, 14.7 psi, carbon dioxide sublimes, los yog converts ncaj qha los ntawm cov khoom mus rau ib tug roj, ntawm -78.5 degrees Celsius.

Dab tsi yog qhov melting point ntawm carbon dioxide?

-78 ° C los yog qhov ntawd yog qhov kub ntawm qhov twg carbon dioxide sublimes (mus los ntawm cov khoom mus rau cov roj yam tsis tau dhau los ntawm cov kua) ntawm tus qauv atmospheric siab. Cov melting point ntawm -56 ° C yog qhov siab dua (vim tias koj tsis tuaj yeem ua kua CO2 ntawm qhov siab qis dua li ntawm 5 atmospheres).

Yuav ua li cas cov pa roj carbon dioxide nyob rau hauv ib tug khoom lub xeev hloov mus rau ib tug roj?

Hloov chaw, ntawm chav tsev kub, nws kev hloov ncaj qha los ntawm a khov kho rau a gas txheej txheem hu ua sublimation. Dej khov qhuav yog qhov daim ntawv khov ntawm carbon dioxide , cov molecule uas tsiaj ua pa tawm thaum peb exhale thiab cov nroj tsuag noj thaum lawv ua photosynthesis.

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