Ответ:
Mr(H2SO4)=1×2+32+16×4=64 +34=98
Mr(Fe2O3)=56×2+16×3=112+48=160
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Ответ:
Mr(H2SO4)=1×2+32+16×4=64 +34=98
Mr(Fe2O3)=56×2+16×3=112+48=160