Video: Hom tshuaj twg yog tsim los ntawm carbon?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov pa roj carbon Forms Covalent Bonds
Piv txwv ntawm covalent bonds tsim los ntawm carbon suav nrog carbon - carbon , carbon -hydrogen, thiab carbon - oxygen bonds. Piv txwv ntawm tshuaj sib xyaw uas muaj cov ntawv cog lus no suav nrog methane, dej, thiab carbon dioxide.
Tsis tas li lo lus nug yog, dab tsi cov tebchaw tsim los ntawm carbon?
Qee qhov feem ntau carbon compounds yog: carbon dioxide (CO2), carbon monoxide (CO), carbon disulfide (CS2), chloroform (CHCl3), carbon tetrachloride (CCl4), methane (CH4), ethylene (C2H4), acetylene (C2H2), benzene (C6H6), ethyl cawv (C2H5OH) thiab acetic acid (CH3COV).
Ib yam li ntawd, dab tsi yog ua los ntawm carbon? Saib ncig koj – carbon yog nyob txhua qhov chaw. Koj yog ua ib feem ntawm carbon , yog li ntawd yog khaub ncaws, rooj tog zaum, yas thiab koj cov tshuab hauv tsev. Muaj carbon hauv huab cua peb ua pa. Pob zeb diamond thiab graphite kuj yog ua ntawm carbon.
Ua raws li qhov no hauv kev txiav txim siab, dab tsi 4 organic compounds yog carbon pom nyob rau hauv?
Cov pa roj carbon monoxide yog qhov tshwj xeeb ntawm lwm cov ntsiab lus vim tias nws tuaj yeem sib txuas hauv txoj hauv kev tsis muaj kev txwv nrog cov ntsiab lus xws li hydrogen, oxygen, nitrogen, sulfur thiab lwm yam carbon atoms. Txhua yam nyob ib leeg xav tau plaub hom organic tebchaw kom ciaj sia - carbohydrates , lipids , nucleic acids thiab cov proteins.
Dab tsi yog 4 hom kev sib cog lus carbon tuaj yeem tsim tau?
Carbon tuaj yeem tsim ib leeg daim ntawv cog lus (kev sib koom ntawm 2 electrons), ob npaug daim ntawv cog lus (share of 4 electrons), thiab/los yog triple daim ntawv cog lus (kev sib koom ntawm 6 electrons).
Pom zoo:
Cov pa roj carbon los ntawm qhov twg los tsim cov piam thaj?
Cov pa roj carbon atoms siv los tsim cov carbohydrate molecules los ntawm cov pa roj carbon dioxide, cov roj uas tsiaj exhale nrog txhua qhov pa. Lub voj voog Calvin yog lo lus siv rau cov kev cuam tshuam ntawm photosynthesis uas siv lub zog khaws cia los ntawm lub teeb-dependent kev cuam tshuam los tsim cov piam thaj thiab lwm cov carbohydrate molecules
Cov tshuaj twg yog ib txwm tsim los ntawm cov tshuaj tiv thaiv neutralization?
Cov tshuaj tiv thaiv acid-base neutralization ib txwm ua rau ntsev. Qee zaum dej tsuas yog tsim cov tshuaj tiv thaiv uas muaj cov ntses bass thaj tsam muaj zog. Yog li cov lus teb yog ntsev
Hom tshuaj twg pom nyob rau hauv cov khoom ntawm cov tshuaj tiv thaiv decomposition?
Cov tshuaj tiv thaiv decomposition tshwm sim thaum ib qho reactant tawg mus rau hauv ob lossis ntau yam khoom. Qhov no tuaj yeem sawv cev los ntawm kev sib npaug dav: AB → A + B. Cov piv txwv ntawm cov tshuaj tiv thaiv decomposition muaj xws li kev tawg ntawm hydrogen peroxide rau dej thiab oxygen, thiab kev tawg ntawm cov dej mus rau hydrogen thiab oxygen
Qhov kev sib npaug twg yog qhov tsim nyog los suav cov cua sov uas tsim los ntawm HCl NaOH cov tshuaj tiv thaiv?
Xam cov naj npawb ntawm moles ntawm lub hauv paus koj ntxiv los txiav txim siab molar tshav kub ntawm qhov nruab nrab, qhia siv qhov sib npaug Δ H = Q ÷ n, qhov twg 'n' yog tus naj npawb ntawm moles. Piv txwv li, xav tias koj ntxiv 25 mL ntawm 1.0 M NaOH rau koj HCl los ua kom muaj cua sov ntawm nruab nrab ntawm 447.78 Joules
Dab tsi yog qhov flux los ntawm lub voos xwmfab ntawm sab yog tias tus nqi ntawm Q yog ntawm ib qho ntawm nws lub ces kaum?
Raws li peb paub tias, tag nrho cov flux los ntawm tus nqi q yog q / ε 0 (Gauss txoj cai). Yog hais tias tus nqi yog nyob rau ntawm lub ces kaum ntawm lub voos xwmfab, ib co ntawm cov flux nkag mus rau hauv lub voos xwmfab thiab tawm los ntawm ib co ntawm nws lub ntsej muag. Tab sis qee qhov flux tsis nkag mus rau hauv lub voos xwmfab. Qhov 1/8th no yuav muab faib ua 3 ntu dua