Zadanie 4
Fe2O3+2Al--->Al2O3+2Fe jest to reakcja wymiany
mAl2O3=2*27u+3*16u=102u
54u---x%
102u---100%
x=52,94%Al
100%-52,94%=47,06%O
Zadanie 5
a) N2O5
O=N-O-N=O
II II
O O
b) CrO3
O=Cr=O
II
O
c) Al2S3
S=Al-S-Al=S
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Zadanie 4
Fe2O3+2Al--->Al2O3+2Fe jest to reakcja wymiany
mAl2O3=2*27u+3*16u=102u
54u---x%
102u---100%
x=52,94%Al
100%-52,94%=47,06%O
Zadanie 5
a) N2O5
O=N-O-N=O
II II
O O
b) CrO3
O=Cr=O
II
O
c) Al2S3
S=Al-S-Al=S