Muaj pes tsawg molecules nyob rau hauv 5.2 moles ntawm h2o?
Muaj pes tsawg molecules nyob rau hauv 5.2 moles ntawm h2o?

Video: Muaj pes tsawg molecules nyob rau hauv 5.2 moles ntawm h2o?

Video: Muaj pes tsawg molecules nyob rau hauv 5.2 moles ntawm h2o?
Video: Dab neeg Vauv tsis haum niam tais 2/6/2017 2024, Kaum ib hlis
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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.

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