Video: Muaj pes tsawg molecules nyob rau hauv 5.2 moles ntawm h2o?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
A mole dej 6.022 x 1023 dej molecules.
Tsis tas li ntawd, pes tsawg molecules nyob rau hauv 2.5 moles ntawm h20?
Kev piav qhia: Koj tuaj yeem suav cov lej ntawm cov molecules los ntawm kev siv Avogadro qhov tsis tu ncua, 6.02 × 1023 molecules/mol Rau txhua 1 mol, muaj 6.02 × 1023 molecules.
Qhov thib ob, pes tsawg molecules nyob rau hauv 2 moles dej? 1 mole = 6.022×10^23 atoms . 1 dej molecule = 2 Hydrogen atoms + 1 oxygen atom. Yog li ntawd, 1 luj H2O = 1.2044 × 10^24 hydrogen atoms . Yog li ntawd 2 mole H2O yuav muaj 2.4088 × 10^24 hydrogen atoms.
Kuj tseem paub, pes tsawg molecules nyob rau hauv 1.5 moles ntawm h2o?
(1/4 ntawm ib mole) x ( 6.02 x 1023 atoms/mole) = kwv yees li 1.5 x 1023 atoms. Yog tias koj muaj qhov sib xyaw zoo li H2O, ces: ib mole ntawm dej muaj 6.02 x 1023 MOLECULES ntawm dej. Tab sis txhua lub molecule ntawm dej muaj 2 H thiab 1 O atom = 3 atoms, yog li muaj kwv yees li 1.8 x 10.24 atoms nyob rau hauv ib tug mole ntawm dej.
Muaj pes tsawg molecules yog 5 moles?
Tus lej no, uas tsuas tuaj yeem pom los ntawm kev ntsuas qhov ua tau zoo, hu ua Avagadro qhov tsis tu ncua / tus lej, feem ntau txhais los ntawm N(A). Luas 6 x 10^23. Yog li hauv 5 moles ntawm cov pa oxygen, uas muaj qhov loj ntawm 5x16 = 80 grams, muaj 5x6x10^23 = 30x10^ 23 molecules.
Pom zoo:
Muaj pes tsawg molecules nyob rau hauv 9 moles ntawm h2s?
9 moles ntawm H2S = 9 (6.022 * 10²³ molecules) = 5.4198 * 1024 molecules. Teb: muaj 5.4198 * 1024 molecules hauv 9.00 moles ntawm H2S
Muaj pes tsawg moles ntawm oxygen atoms nyob rau hauv ib mole ntawm Al2O3?
(c) 1 molecule ntawm Al2O3 muaj 3 atoms ntawm oxygen. Yog li, 1 mole ntawm Al2O3 muaj
Muaj pes tsawg tus dej molecules nyob rau hauv 4 moles?
Yog li, 4 moles ntawm dej yuav muaj 4 (6.022x10^23) cov dej molecules
Muaj pes tsawg moles ntawm nitrogen nyob rau hauv 1.2 grams ntawm aspartame?
Cov mis mos molecular rau aspartame yog C14H18N2O5, thiab nws cov molar loj yog li 294 g / mol. 1.2 g / 294 g / mol = 4.08 X 10-3 moles aspartame. Txij li txhua mole ntawm aspartame muaj 2 moles ntawm nitrogen, koj muaj 8.16 X 10-3 moles ntawm N hauv koj 1.2 grams ntawm aspartame
Muaj pes tsawg grams ntawm o2 nyob rau hauv 1.2 moles ntawm o2?
Koj tuaj yeem saib cov ntsiab lus ntxiv ntawm txhua chav ntsuas: molecular hnyav ntawm O2 lossis grams Lub hauv paus SI rau tus nqi ntawm cov khoom yog mole. 1 mole yog sib npaug rau 1 moles O2, los yog 31.9988grams. Nco ntsoov tias kev sib hloov yuam kev tuaj yeem tshwm sim, yog li nco ntsoov xyuas qhov ntawd