Video: Qhov feem pua ntawm cov tshuaj aspirin c9h8o4 yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Ib feem pua ntawm cov khoom
| Element | Cim | Pawg Feem pua |
|---|---|---|
| Hydrogen | H | 4.476% |
| Cov pa roj carbon | C | 60.001% |
| Oxygen | O | 35.523% |
Hauv qhov no, qhov feem pua ntawm cov tshuaj aspirin yog dab tsi?
Lub hauv paus loj feem pua ntawm cov tshuaj aspirin yog 60.00% C, 4.48% H, thiab 35.52% O.
Qhov thib ob, koj ua li cas thiaj nrhiav tau qhov feem pua muaj pes tsawg leeg? Ib feem pua
- Nrhiav cov molar loj ntawm tag nrho cov ntsiab nyob rau hauv lub compound nyob rau hauv grams ib mole.
- Nrhiav cov molecular loj ntawm tag nrho cov compound.
- Faib cov khoom molar mass los ntawm tag nrho cov molecular loj.
- Tam sim no koj yuav muaj tus lej ntawm 0 thiab 1. Muab nws los ntawm 100% kom tau txais cov feem pua.
Hais txog qhov no, pes tsawg feem pua ntawm hydrogen hauv aspirin c9h8o4 yog dab tsi?
44.4%
Puas yog cov tshuaj aspirin c9h8o4 yog cov khoom lossis cov khoom sib xyaw?
Aspirin muaj formula c9h8o 4 . A compound yog cais los ntawm hiav txwv urchins uas kuj muaj cov qauv c9h8o 4.
Pom zoo:
Qhov feem ntawm 33 1 3 feem pua yog dab tsi?
Piv txwv tus nqi feem pua ntawm cov zauv feem 25% 0.25 1/4 331/3% 0.333 1/3 50% 0.5 1/2 75% 0.75 3/4
Dab tsi yog cov nyhuv tshuaj ntawm hluav taws xob muab qee qhov piv txwv ntawm cov nyhuv tshuaj?
Ib qho piv txwv ntawm cov tshuaj muaj zog hauv cov hluav taws xob tam sim no yog electroplating. Hauv cov txheej txheem no, muaj cov kua dej uas muaj hluav taws xob dhau mus. qhov no yog ib qho piv txwv ntawm kev siv tshuaj lom neeg hauv hluav taws xob tam sim no
Dab tsi yog Qhov Ib Feem Cuam Tshuam ntawm cov khoom hydrogen hauv cov methane ch4 yog dab tsi?
Cov feem pua ntawm cov ntsiab lus los ntawm Element Element Symbol Mass Percent Hydrogen H 25.132% Carbon C 74.868%
Qhov feem pua ntawm qhov loj ntawm BR hauv CuBr2 yog dab tsi?
Cov feem pua ntawm cov ntsiab lus Element Symbol Mass Percent Copper Cu 28.451% Bromine Br 71.549%
Dab tsi yog qhov feem pua enantiomeric tshaj ntawm qhov sib tov uas muaj 86?
Enantiomeric tshaj (ee): Qhov ntau tshaj ntawm ib qho enantiomer tshaj qhov sib tov ntawm enantiomers. Qhia lej: enantiomeric tshaj = % ntawm cov enantiomer loj - % ntawm cov me me enantiomer. Piv txwv li: Ib qho kev sib xyaw ua ke ntawm 86% R enantiomer thiab 14% S enantiomer muaj 86% - 14% = 72% ee