Video: Ib qho kev daws teeb meem hauv lej yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Published on Nov 9, 2014. Koj yuav tau txiav txim seb puas muaj qhov sib npaug ib xal (uas yog thaum ib sib txawv sib npaug ib number), los yog nws tsis muaj daws (ob tog ntawm qhov sib npaug tsis sib npaug) los yog infinite kev daws teeb meem (ob sab ntawm qhov sib npaug yog tib yam).
Xav txog qhov no, qhov piv txwv ntawm ib qho kev daws teeb meem yog dab tsi?
Qhov no yog qhov xwm txheej ib txwm, zoo li hauv peb piv txwv qhov twg qhov sib npaug 2x + 3 = 7 muaj raws nraim ib xal , uas yog x = 2. Lwm ob kis, tsis muaj daws thiab tus naj npawb ntawm infinite kev daws teeb meem , yog cov xwm txheej oddball uas koj tsis xav tias yuav khiav mus rau ntau zaus.
Ib yam li ntawd, 0x hauv algebra yog dab tsi? Thaum peb muab ntau tus lej, txhua qhov sib txawv, ib qho kev qhia, ib qho kev sib npaug nrog xoom qhov tshwm sim yog xoom. Yog li, thaum peb muab 0 los ntawm x thiab sau nws li 0x ib , nws ua rau tsis muaj kev nkag siab vim thaum kawg cov lus teb yog xoom.
Hauv qhov no, dab tsi yog qhov kev daws teeb meem tsis kawg hauv lej?
Infinite Solutions . Thawj yog thaum peb muaj dab tsi hu ua kev daws teeb meem tsis kawg . Qhov no tshwm sim thaum txhua tus lej kev daws teeb meem . Qhov xwm txheej no txhais tau tias tsis muaj leej twg daws . Cov kev sib npaug 2 x + 3 = x + x + 3 yog ib qho piv txwv kev sib npaug uas muaj tsis kawg tus lej ntawm kev daws teeb meem.
Qhov kev sib npaug twg tsis muaj kev daws teeb meem?
Ceev faj kom tsis txhob yuam kev x = 0 nrog "tsis muaj kev daws teeb meem". Qhov kev daws x = 0 txhais tau tias cov tus nqi 0 txaus siab rau qhov sib npaug, yog li muaj kev daws teeb meem. "Tsis muaj kev daws teeb meem" txhais tau tias tsis muaj tus nqi , tsis txawm 0, uas yuav txaus siab rau qhov sib npaug.
Pom zoo:
Cov txheej txheem ntawm kev tsim cov kev daws teeb meem yog dab tsi?
Kev daws yog tsim thaum ib yam khoom hu ua thesolute 'dissolves' rau hauv lwm yam khoom hu ua hnyav.Dissolving yog thaum lub solute tawg los ntawm ib tug loj siv lead ua ntawm molecules mus rau ntau me me los yog ib tug molecules. Lawv ua qhov no los ntawm rub tawm cov ions thiab tom qab ntawd ncig cov ntsev molecules
Dab tsi xim yog phenol liab nyob rau hauv ib qho kev daws teeb meem?
Phenol liab yog cov kua qaub-puag qhia. Nws yog tsim los ntawm condensing ob moles ntawm phenol nrog ib tug mole ntawm o-sulfobenzoic acid anhydride. Phenol Liab yog siv los ua pH qhia hauv daim ntawv thov kab lis kev cai ntawm tes. Kev daws ntawm phenol liab yuav muaj xim daj ntawm pH ntawm 6.4 lossis qis dua thiab xim liab ntawm pH
Dab tsi yog cov lej suav tag nrho cov lej suav lej thiab lej lej?
Cov lej tiag yog feem ntau muab faib ua cov lej tsis sib haum xeeb thiab tsis sib haum xeeb. Cov zauv rational suav nrog tag nrho cov lej thiab feem. Txhua tus lej tsis zoo thiab tag nrho cov lej ua rau cov lej suav. Tag nrho cov lej suav nrog txhua tus lej ntuj thiab xoom
Puas yog nws ua tau rau ib qho kev sib npaug ntawm ob txoj kab sib npaug kom tsis muaj kev daws teeb meem piav qhia koj qhov laj thawj?
Cov kab ke ntawm kab sib npaug tuaj yeem tsuas muaj 0, 1, lossis ib qho kev daws teeb meem tsis kawg. Ob kab no tsis tuaj yeem hla ob zaug. Cov lus teb raug yog tias qhov system muaj ib qho kev daws teeb meem. Total Number of Points Number of 2-Point Baskets Number of 3-Point Baskets 17 4 (8 ntsiab lus) 3 (9 points) 17 1 (2 points) 5 (15 points)
Dab tsi yog qhov concentration ntawm hydronium ions nyob rau hauv ib qho kev daws teeb meem?
Cov dej ntshiab yog suav tias yog nruab nrab thiab qhov concentration ntawm hydronium ion yog 1.0 x 10-7 mol / L uas yog sib npaug rau hydroxide ion concentration