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phankyanhls2000

$n_{PbO}=22,3:223=0,1(mol)$
$n_{ZnO}=32,4:81=0,4(mol)$
$n_{H_2}=0,1+0,4=0,5(mol)$
$V_{H_2}=0,5.22,4=11,2(g)$

$n_{Fe_3O_4}=58:232=0,25(mol)$
$n_{MgO}=20:40=0,5(mol)$
$n_{CO}=0,25.4+0,5=1,5(mol)$
$V_{CO}=1,5.22,4=33,6(g)$
 
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