se ard 12 grame de magneziu
ce volum de oxigen este necesar
ce masa de oxid de magneziu se obtine
D-AU COROANA

Răspunsul a fost dat de: USER6434
30 Agustus 2025 chimie 5 minute
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Clasă: Education Materie: chimie
se ard 12 grame de magneziu
ce volum de oxigen este necesar
ce masa de oxid de magneziu se obtine
D-AU COROANA
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 12     x             y                                                                                           2Mg+O2---2MgO 
2*24    32    2*40

x OXIGEN =12*32/2*24=8 g de oxigen 
n oxigen= m/M 
n oxigen= 8/32=1/4 moli oxigen
V oxigen= 22,4* 1/4= 5,6 l Oxigen
M oxid de magneziu= 24+16=40g/mol
y=12*2*40/2*24=20 g MgO. 
Răspunsul a fost dat în data 30 Agustus 2025

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