а)Mr(NH4)3PO4=Ar(N)×3+Ar(H)×12+Ar(P)+Ar(O)×4=149
б)Mr(HCl)=Ar(H)+Ar(Cl)=36
в)Mr(H2CO3)=Ar(H)×2+Ar(C)+Ar(O)×3=62
5)Mr(AgNO3)=Ar(Ag)+Ar(N)+Ar(O)×3=170
w(Ag)=Ar(Ag):Mr(AgNO3)=108:170=0,635×100=63,5%
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а)Mr(NH4)3PO4=Ar(N)×3+Ar(H)×12+Ar(P)+Ar(O)×4=149
б)Mr(HCl)=Ar(H)+Ar(Cl)=36
в)Mr(H2CO3)=Ar(H)×2+Ar(C)+Ar(O)×3=62
5)Mr(AgNO3)=Ar(Ag)+Ar(N)+Ar(O)×3=170
w(Ag)=Ar(Ag):Mr(AgNO3)=108:170=0,635×100=63,5%