Объяснение:
m=n×Mr
N=n×Na
m(Mg)=48
m(O2)=24
m(Fe)=28
N(Mg)= 12.04×10^23
N(O2)=9.03×10^23
N(Fe)=3.01×10^23
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Объяснение:
m=n×Mr
N=n×Na
m(Mg)=48
m(O2)=24
m(Fe)=28
N(Mg)= 12.04×10^23
N(O2)=9.03×10^23
N(Fe)=3.01×10^23