Объяснение:
m(As2O3)=m(As)+m(O2)
m=ин*Mr
m(As)=4*75=300
m(O2)=16*6=96
m(2As2O3)=4*75+6*16=396
4As+3O2=300+96=396
396=396
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Объяснение:
m(As2O3)=m(As)+m(O2)
m=ин*Mr
m(As)=4*75=300
m(O2)=16*6=96
m(2As2O3)=4*75+6*16=396
4As+3O2=300+96=396
396=396