Video: Dab tsi yog qhov tseem ceeb ntawm cov coefficients hauv kev sib npaug sib npaug?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
coefficients yog tseem ceeb los ua pov thawj txoj cai ntawm kev txuag ntawm pawg. Cov coefficients nyob rau hauv ib tug balanced tshuaj kev sib npaug qhia cov txheeb ze ntawm moles ofreactants thiab cov khoom. Los ntawm cov ntaub ntawv no, lub Cheebtsam ntawm reactants thiab cov khoom yuav raug xam. Koj tuaj yeem txiav txim seb tus lej ntawm moles ntawm cov khoom.
Kuj paub, dab tsi yog qhov tseem ceeb ntawm cov coefficients hauv kev sib npaug tshuaj sib npaug?
Hauv ib balanced tshuaj sib npaug , tag nrho cov naj npawb ntawm atoms ntawm txhua lub caij tam sim no yog tib yam ntawm ob sab ntawm lub kev sib npaug . Stoichiometric coefficients yog cov coefficients yuav tsum tau tshuav nyiaj li cas a chemicalequation . Cov no yog tseem ceeb vim lawv hais txog cov nyiaj ntawm cov reactants siv thiab cov khoom tsim.
Tsis tas li ntawd, vim li cas qhov sib npaug sib npaug tseem ceeb hauv stoichiometry? Coefficients ntawm a sib npaug tshuaj kev sib npaug qhia peb cov txheeb ze ntawm moles ntawm reactants thiab cov khoom. Tag nrho stoichiometric suav pib nrog a kev sib npaug . Kev sib npaug yog qhov tsim nyog vim huab hwm coj tau khaws cia hauv txhua qhov tshuaj tiv thaiv. Qhov no yog cov reactant uas yog siv tag nrho hauv cov tshuaj tiv thaiv.
Ntawm no, cov coefficients nyob rau hauv ib qho kev sib npaug sib npaug sawv cev li cas?
First: lub coefficients muab tus naj npawb ntawm molecules (los yog atoms) koom nrog cov tshuaj tiv thaiv. Hauv kev ua piv txwv, ob lub molecules ntawm hydrogen react nrog ib lub molecule ntawm oxygen thiab tsim ob molecules ntawm dej. Thib ob: lub coefficients muab tus naj npawb ntawm moles ntawm txhua yam tshuaj muaj nyob rau hauv cov tshuaj tiv thaiv.
Dab tsi yog sawv cev los ntawm cov lej coefficients uas tau muab tso rau pem hauv ntej ntawm cov qauv hauv kev sib npaug sib npaug?
Muaj cov subscripts, uas yog ib feem ntawm cov tshuaj cov qauv ntawm cov reactants thiab cov khoom thiab muaj coefficients uas muab tso rau pem hauv ntej ntawm cov qauv Qhia seb muaj pes tsawg molecules ntawm cov khoom siv los yog tsim tawm. Daim duab 7.4.1: Sib npaug Kev sib npaug.
Pom zoo:
Dab tsi coefficients koj tuaj yeem siv hauv kev sib npaug sib npaug?
Ua ntej: cov coefficients muab cov naj npawb ntawm cov molecules (los yog atoms) koom nrog cov tshuaj tiv thaiv. Hauv qhov piv txwv cov tshuaj tiv thaiv, ob lub molecules ntawm hydrogen react nrog ib molecule ntawm oxygen thiab tsim ob molecules ntawm dej. Thib ob: cov coefficients muab tus naj npawb ntawm moles ntawm txhua yam tshuaj koom nrog hauv cov tshuaj tiv thaiv
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
Cov coefficients hauv kev sib npaug tshuaj sib npaug qhia koj li cas txog cov reactants thiab cov khoom?
Cov coefficients ntawm kev sib npaug chemicalequation qhia peb cov txheeb ze ntawm moles ntawm reactants thiab cov khoom. Hauv kev daws teeb meem stoichiometric, kev hloov pauv ntawm moles ntawm reactants rau moles ntawm cov khoom raug siv. Hauv kev suav loj, cov molar loj yog xav tau los hloov cov huab hwm coj mus rau moles
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