Cr2O3+2Al=Al2O3+Cr2
n Cr2O3=304/152=2 моль
n Al=4 моль
m Al=4*27=108 г
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Cr2O3+2Al=Al2O3+Cr2
n Cr2O3=304/152=2 моль
n Al=4 моль
m Al=4*27=108 г