Ntau yam tshuaj muaj nyob rau hauv cov kua es tsis yog cov khoom khov. Cov tshuaj ua kua tau yooj yim siv thiab ntsuas dua li cov khib nyiab, tshwj xeeb tshaj yog vim cov khib nyiab feem ntau muaj nyob hauv cov hmoov. Txawm li cas los xij, stoichiometry rau tshuaj lom neeg ua cov nyom ua kua ntau dua. Stoichiometry hauv kev suav suav siv tus nqi ntawm cov khoom uas suav nrog hauv qhov kev ua zauv. Cov kua uas siv los ua cov kuab tshuaj tsis hnov mob thiab stoichiometry tsis coj cov kua mus rau hauv tus account hauv cov tshuaj tiv thaiv. Tus nqi ntawm cov tshuaj tiv thaiv tuaj yeem txiav txim siab los ntawm kev nrhiav qhov qub ntawm cov tshuaj. Siv cov lus qhia hauv qab no los kawm txhawm rau suav qhov qub.
Kauj ruam
Kauj Ruam 1. Sau cov ntaub ntawv hais txog qhov hnyav sib npaug ntawm cov tshuaj tiv thaiv kab mob
Xa mus rau phau ntawv siv tshuaj lom neeg kom pom qhov muaj nuj nqis thiab hnyav ntawm cov tshuaj hauv cov lus nug. Molecular hnyav yog qhov sib piv ntawm qhov hnyav ntawm 1 molecule ntawm cov khoom mus rau qhov hnyav ntawm ib qho molecule ntawm carbon-12 faib los ntawm 12. Valence tau txiav txim siab los ntawm tus lej ntau tshaj ntawm valence subatomic lossis interatomic bonds uas tuaj yeem tsim nrog lwm yam tshuaj. Cov ntaub ntawv no xav tau los txiav txim siab qhov qub.
Kauj Ruam 2. Nrhiav qhov hnyav sib npaug ntawm cov khoom
Qhov hnyav sib npaug ntawm cov khoom sib npaug rau nws qhov hnyav hnyav sib faib los ntawm nws qhov muaj txiaj ntsig.
Kauj Ruam 3. Xam qhov qub
Qhov qub yog qhov siab ntawm cov tshuaj hauv cov lus nug hauv kev daws. Yog li, qhov ib txwm muaj yog cov khoom sib xyaw, thiab nws cov txiaj ntsig sib txawv nyob ntawm qhov hnyav ntawm cov tshuaj hnyav hauv kev daws cov tshuaj hauv nqe lus nug. Qhov qub yog tus naj npawb ntawm cov gram ntawm cov khoom hauv lo lus nug faib los ntawm cov khoom sib npaug qhov hnyav thiab qhov hnyav ntawm qhov hnyav.
Kauj Ruam 4. Saib qhov piv txwv hauv qab no
Dissolve sodium chloride (NaCl) hauv dej. Sodium chloride muaj tus lej muaj nuj nqis ntawm 1 thiab lub cev hnyav ntawm 58,443. 58, 443 x 0.05) lossis sib npaug rau 0.342.
