Video: Qhov sib npaug ntawm KW yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Kw = [H3O+][OH-] = [H+][OH-] = 1.001x10-14 (ntawm 25 oC, Kw yog qhov kub thiab txias nyob ntawm) (Siv [H3O+] sib npaug rau kev siv [H+].) Qhov sib npaug tsis tu ncua, Kw , yog hu ua dissociation tas li los yog ionization tas li ntawm dej.
Hais txog qhov no, tus qauv rau kW hauv chemistry yog dab tsi?
Qhov no tas li, Kw , yog hu ua dej autoprotolysis tas li lossis dej autoionization tas li. (Qee lub sij hawm lub prefix auto poob, raws li tau ua nyob rau hauv lub npe ntawm seem no.) Nws tuaj yeem txiav txim siab los ntawm kev sim thiab muaj tus nqi 1.011 x 10¯14 ntawm 25 ° C. Feem ntau, tus nqi ntawm 1.0 x 10¯14 yog siv.
Tus nqi ntawm KW ntawm 25 C yog dab tsi? Cov tus nqi Kw ntawm 25 degrees Celsius yog 1 × 10 − 14 1 × 10 − 14. Kw yog ib qho piv txwv ntawm qhov sib npaug.
Hais txog qhov no, kW sib npaug li cas?
Lub kilowatt-teev yog ib chav tsev sib xyaw ntawm lub zog sib npaug ib kilowatt ( kW ) lub zog txhawb nqa rau ib teev. Qhia nyob rau hauv tus qauv chav tsev ntawm lub zog nyob rau hauv lub International System of Units (SI), lub joule (cim J), nws yog sib npaug 3600 kilojoules (3.6 MJ).
kVA txhais li cas?
Kilovolt-amp ( kVA ua ) kVA ua yog kilo-volt-ampere. kVA ua yog ib chav tsev pom meej zog, uas yog hluav taws xob fais fab. 1 kilo-volt-ampere yog sib npaug rau 1000 volt-ampere: 1kVA = 1000VA.
Pom zoo:
Yuav daws qhov tsis sib npaug ntawm cov kab sib npaug thiab cov kab sib npaug sib npaug li cas?
Kev daws qhov tsis sib npaug ntawm qhov sib npaug yog zoo ib yam li kev daws cov kab sib npaug. Qhov sib txawv tseem ceeb yog koj tig lub cim tsis sib xws thaum faib lossis muab faib los ntawm tus lej tsis zoo. Graphing linear inequalities muaj ob peb qhov sib txawv ntxiv. Qhov uas yog qhov ntxoov ntxoo muaj xws li qhov tseem ceeb uas qhov kev tsis sib xws ntawm cov kab tawm muaj tseeb
Dab tsi yog qhov txawv ntawm qhov sib txawv ntawm qhov sib txawv thiab qhov sib txawv ntawm qhov ntab?
Integers thiab floats yog ob yam sib txawv ntawm cov ntaub ntawv tus lej. Ib tus lej (feem ntau hu ua anint) yog tus lej tsis muaj tus lej lej. Float isa floating-point number, uas txhais tau hais tias nws yog tus lej uas muaj tus lej lej. Floats siv thaum xav tau ntau dua
Qhov sib npaug sib npaug rau qhov nruab nrab ntawm h2so4 los ntawm Koh yog dab tsi?
Hauv daim vis dis aus no peb yuav sib npaug ntawm qhov sib npaug KOH + H2SO4 = K2SO4 + H2O thiab muab cov coefficients raug rau txhua qhov sib xyaw. Txhawm rau sib npaug KOH + H2SO4 = K2SO4 + H2O koj yuav tsum nco ntsoov suav tag nrho cov atoms ntawm txhua sab ntawm cov tshuaj sib npaug
Dab tsi yog qhov sib txawv ntawm qhov sib txawv ntawm cov kab sib txuas thiab ntau qhov sib piv?
6. (2 lub cim) Qhov sib txawv ntawm cov kab sib txuas (kev sib piv) thiab ntau qhov sib piv yog dab tsi? Cov kab sib xyaw ua ke yog npaj sib piv; uas yog, tshwj xeeb txhais tau tias yog ua ke nyob rau hauv ntau txoj kev thiab contrasted nrog rau lwm yam kev sib txuas ntawm txhais tau tias
Dab tsi yog qhov sib txawv ntawm cov kab lus sib npaug thiab qhov sib npaug sib npaug?
Cov kab lus sib npaug muaj qhov muaj txiaj ntsig zoo ib yam tab sis tau nthuav tawm nyob rau hauv ib hom ntawv sib txawv uas siv cov khoom ntawm cov lej xws li ax + bx = (a + b) x yog cov kab lus sib npaug. nruj me ntsis, lawv tsis yog 'sib npaug', yog li peb yuav tsum siv 3 kab sib luag hauv 'sib npaug' es tsis yog 2 raws li qhia ntawm no