Cov txheej txheem:
- chlorofluoromethane ua li cas?
- Dab tsi yog siv los ua qhov chaw ntawm chlorofluoromethane?
- Lub ntsiab lus ntawm chlorofluorocarbon hauv thaj chaw yog dab tsi?
- Puas yog chlorofluoromethane optically nquag siv?
Video: Txhais li cas los ntawm chlorofluoromethane?
2024 Tus sau: Fiona Howard | [email protected]. Kawg hloov kho: 2024-01-10 06:38
noun. ib qho ntawm cov pa roj carbon monoxide lossis volatile methanes hloov nrog cov tshuaj chlorine thiab fluorine thiab muaj me me lossis tsis muaj hydrogen: siv los ua cov tub yees thiab, yav tas los, ua aerosol propellants kom txog rau thaum cov kws tshawb fawb tau txhawj xeeb txog kev depletion ntawm atmospheric. ozone txheej.
chlorofluoromethane ua li cas?
Pyrolysis ntawm kev sib xyaw ntawm dichlorofluoromethane thiab chlorofluoromethane muab hexafluorobenzene : 3 CHCl2F + 3 CH 2 ClF → C6F6 + 9 HCl.
Dab tsi yog siv los ua qhov chaw ntawm chlorofluoromethane?
Teb: c) Freon. yog siv los ua chlorofluoromethane.
Lub ntsiab lus ntawm chlorofluorocarbon hauv thaj chaw yog dab tsi?
: ib qho ntawm ntau yam yooj yim gaseous tebchaw uas muaj cov pa roj carbon, chlorine, fluorine, thiab qee zaum hydrogen, uas yog siv los ua cov tub yees, ntxuav cov kuab tshuaj, thiab aerosol propellants thiab hauv kev tsim khoom. ntawm cov yas foams, thiab uas ntseeg tau tias yog ib qho tseem ceeb ntawm stratospheric ozone depletion -abbreviation CFC.
Puas yog chlorofluoromethane optically nquag siv?
Cov pa roj carbon atom hauv chlorofluoromethane muaj ob qhov sib txawv H hloov pauv. Yog li ntawd, cov tshuaj no yog achiral thiab tsis tsim enantiomers. Teb: (i) yuav ua haujlwm kho qhov muag; (ii) yuav tsis ua haujlwm optically.
Pom zoo:
Puas qhov loj ntawm tus txiv neej txhais tes txhais li cas?
Ib tug txiv neej tes Size Hints at His Athletic Ability Cov txiv neej nrog ntiv nplhaib ntev dua txhais tes muaj zog dua, tsis hais lawv lub hnub nyoog thiab lub cev loj npaum li cas, ib pab pawg ntawm leej txiv-tus kws tshawb fawb pom. Ntau qhov kev tshawb fawb qhia txog qhov kev xav uas ntev ntiv tes txuas nrog kev ua kis las zoo tshaj thiab tag nrho lub zog .
Koj txhais li cas los ntawm kev txhais lus?
transitive verb.: to question (qee tus, xws li ib tug nom tswv txawv teb chaws) raug cai hais txog kev ua nom ua tswv lossis txoj cai lossis kev coj tus kheej . piv txwv piv txwv yog dab tsi? Piv txwv li, thaum tus nom tswv hais rau pawg neeg li ' pej xeem', lossis tus kws qhia ntawv hais ib chav kawm li 'cov tub ntxhais kawm', cov neeg nyob rau hauv cov xwm txheej no raug nug kom txais yuav.
Txhais li cas los ntawm kev rov qab los?
Muaj peev xwm lossis muaj peev xwm rov zoo regenerative txhais li cas? Regenerative txhais tau tias tuaj yeem lossis nyiam rov tsim dua -kom rov ua dua lossis rov ua dua tshiab lossis rov ua dua, tshwj xeeb tshaj yog tom qab raug puas lossis ploj.
Puas tib neeg hloov zuj zus los ntawm chimps vim li cas los yog vim li cas ho tsis?
Nws yog ib lo lus teb yooj yim: Tib neeg tsis tau hloov zuj zus los ntawm chimpanzees los yog lwm yam zoo kawg nkaus apes uas nyob niaj hnub no. Peb sib koom ib tug poj koob yawm txwv uas nyob kwv yees li 10 lab xyoo dhau los . Puas tib neeg hloov zuj zus los ntawm apes?
Los ntawm axis ntawm symmetry txhais?
Ib kab los ntawm ib sab kom txhua sab yog daim iav. Thaum cov duab yog folded nyob rau hauv ib nrab raws li axis ntawm symmetry, ces ob halves match up . Koj txhais li cas los ntawm axis ntawm symmetry? Lub axis ntawm symmetry ntawm parabola yog kab ntsug uas faib cov parabola rau hauv ob qhov sib xyaw ua ke.
