$B1/$
$1/ nZn=52/65=0,8 mol$
$2/ n CH4 = 8,96/22,4=0,4 mol$
$3/nO2=17,92/22,4=0,8 mol$
$4/nAl=21,6/27=0,8 mol$
$5/nS=19,2/32=0,6 mol$
$6/ nC=4,8/12=0,4 mol$
$B2/$
$1/ mAl2O3=0,5.102=20,5g$
$2/mO2=0,2.32=16 g$
$3/mFe=1,5.56=84g$
$4/mS=2,5.32=80g$
$b3$
$1/V_{CH_{4}}$$=0,2.22,4=4,48l$
$2/VO2=0,5.22,4=11,2l$
$3/VCO2=1,5.22,1=33,6l$
$4/VSO2=2,5.22,4=56l$
B4/
1/
$M_{A}=\frac{20,4}{0,2}=102g/mol$
2/
$M_{B}=\frac{80}{0,5}=160g/mol$
3/
$M_{C}=\frac{80}{0,5}=160g/mol$
4/
$M_{C}=\frac{24,3}{0,3}=81g/mol$
