Video: Qhov feem pua ntawm qhov loj ntawm hydrogen hauv ch3cooh yog dab tsi?
2024 Tus sau: Stanley Ellington | [email protected]. Kawg hloov kho: 2023-12-16 00:17
Ib feem pua ntawm cov khoom
| Element | Cim | Pawg Feem Xyuam |
|---|---|---|
| Hydrogen | H | 6.714% |
| Cov pa roj carbon | C | 40.001% |
| Oxygen | O | 53.285% |
Xav txog qhov no, qhov loj ntawm ch3cooh yog dab tsi?
60,052 g / mol
Qhov thib ob, qhov feem pua mas yog dab tsi? Loj feem pua yog ib txoj hauv kev los sawv cev rau qhov kev sib koom ua ke ntawm ib lub ntsiab lus hauv ib qho kev sib txuas lossis cov khoom sib xyaw hauv kev sib xyaw. Loj feem pua yog xam raws li tus pawg ntawm ib feem faib los ntawm tag nrho pawg ntawm qhov sib tov, multiplied los ntawm 100%. Kuj Paub Raws li: ntau feem pua , (w/w)%
Tsis tas li ntawd, muaj pes tsawg hydrogen atoms nyob hauv ch3cooh?
Tus naj npawb ntawm hydrogen molecules nyob rau hauv ethanoic acidor CH3 COJ yog 4 vim peb pom thawj hydrogens yog 3 (CH3) thiab ib tug hydrogen thaum kawg COOH. Tus naj npawb ntawm yog dab tsi hydrogen dej sib txuas molecules Txuas hauv CuSO4.5H2O?
Dab tsi yog atoms nyob rau hauv ch3cooh?
CH3 COJ yog hu ua Acetic acid, tseem hu ua asethanoic acid thiab methane carboxylic acid, yog cov kua tsis muaj xim uas muaj zog thiab sib txawv pungent thiab qaub tsw. Nws muaj ob carbon (C) atoms , plaub hydrogen (H) atoms thiab oxygen (O) atoms . Vim nws muaj cov pa roj carbon nyob rau hauv nws cov tshuaj chemical, nws yog ib qho organic compound.
Pom zoo:
Dab tsi yog qhov muag zoo los ntawm feem pua ntawm cov khw muag khoom?
Tus nqi muag-los ntawm tus nqi (STR) yog ib qho kev ntsuas siv los ntawm cov khw muag khoom thiab cov muag khoom hauv online uas sib piv cov khoom muag tau txais los ntawm cov chaw tsim khoom rau cov naj npawb ntawm cov khoom muag rau lawv cov neeg siv khoom. Piv txwv li, yog tias koj lub khw xaj 50 lub rooj zaum thiab muag 20 ntawm lawv, koj tus nqi muag khoom yog 20/50 x 100 = 40%
Qhov feem pua ntawm carbon nyob rau hauv wrought hlau yog dab tsi?
Wrought hlau yog ib hom kev lag luam hlau uas muaj tsawg dua 0.10% carbon, tsawg dua 0.25% ntawm impurities tag nrho cov sulfur, phosphorus, silicon thiab manganese, thiab tsawg dua 2% slag los ntawm qhov hnyav. Wrought hlau yog redshort los yog kub luv yog hais tias nws muaj sulfur nyob rau hauv ntau ntau
Lub npe dab tsi tau muab rau Wall Street kev sib tsoo ntawm 29th Lub Kaum Hli 1929 tseem hu ua kev lag luam poob ntawm xyoo 1929 uas ua rau muaj Kev Nyuaj Siab Loj nyob rau xyoo 1930 Kev Nyuaj Siab Loj yog lub ntiaj teb loj heev
Kev Nyuaj Siab Loj tau pib hauv Tebchaws Meskas tom qab muaj kev poob loj hauv cov nqi khoom lag luam uas pib thaum lub Cuaj Hlis 4, 1929, thiab tau dhau los ua xov xwm thoob ntiaj teb nrog kev lag luam lag luam poob ntawm Lub Kaum Hli 29, 1929, (lub npe hu ua Dub Tuesday). Nyob nruab nrab ntawm 1929 thiab 1932, thoob ntiaj teb cov khoom lag luam thoob ntiaj teb (GDP) poob los ntawm kwv yees li 15%
Qhov feem pua nce hauv lej yog dab tsi?
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