Dab tsi yog qhov feem pua ntawm magnesium los ntawm huab hwm coj hauv magnesium oxide?

Cov txheej txheem:

Xam qhov loj ntawm reactants

Video: Dab tsi yog qhov feem pua ntawm magnesium los ntawm huab hwm coj hauv magnesium oxide?

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 Xyuam
Magnesium	Mg	60.304%
Oxygen	O	39.696%

Tib neeg kuj nug, qhov feem pua ntawm cov magnesium hauv cov khoom yog dab tsi?

24.3/40.3 • 100 = 60.3% nyob rau hauv magnesium loj hauv nws. Cov no feem pua zoo ib yam yog tias koj noj 1000 lossis ib txhiab tus khub niam txiv MgO hauv ib qho twg tus nqi ntawm cov khoom no. Vam tias qhov no yuav pab tau. Ntawm no yog ib tug video uas tham txog yuav ua li cas xam feem pua muaj pes tsawg leeg rau cov hlau oxide compound siv cov ntaub ntawv sim.

Ib yam li ntawd, muaj pes tsawg leeg ntawm magnesium oxide yog dab tsi? Qhov tseeb% muaj pes tsawg leeg los ntawm mass magnesium oxide yog: 60% magnesium , 40% oxygen.

Ib sab saum toj no, uas muaj ntau dua qhov feem pua ntawm magnesium MgO lossis Mg3N2?

Yog li ntawd, Mg3N2 muaj qhov loj dua feem pua tshaj MgO yog tias ob leeg nyob rau hauv daim ntawv ntshiab, uas yog yuav luag tsis yooj yim sua nyob rau hauv practicality. Yog li ntawd, yog hais tias tus mg3n 2 tsuas yog 90% ntshiab nrog cov impurities uas tsis muaj Mg, nws ntau feem pua yuav yog 0.90 * 72.2% = 65% thiab nws tseem yuav muaj Mg ntau dua MgO ib unit pawg.

Yuav ua li cas koj pom qhov loj ntawm magnesium oxide tsim?

Xam qhov loj ntawm reactants

Magnesium reacts nrog oxygen los tsim magnesium oxide:
2Mg(s) + O2(g) 2MgO(s)
Xam qhov loj ntawm magnesium xav tau los tsim 12.1g ntawm magnesium oxide.
(Cov neeg txheeb ze: Mg = 24.3, MgO = 40.3)
tus lej ntawm MgO =
=
= 0,300 mol.

Pom zoo:

Txoj cai ntawm kev txuag huab hwm coj yog dab tsi thiab vim li cas nws tseem ceeb?

Txoj cai ntawm kev txuag ntawm huab hwm coj tseem ceeb heev rau kev kawm thiab tsim cov tshuaj tiv thaiv. Yog tias cov kws tshawb fawb paub txog qhov ntau thiab cov cim ntawm cov tshuaj reactants rau ib qho tshuaj tiv thaiv, lawv tuaj yeem kwv yees tus nqi ntawm cov khoom uas yuav ua

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