Объяснение:
Mr(As2O5)=2×75+5×16=230
w(As)=(2×75×100)/230=65.2%
w(O)=(5×16×100)/230=34.8%
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Объяснение:
Mr(As2O5)=2×75+5×16=230
w(As)=(2×75×100)/230=65.2%
w(O)=(5×16×100)/230=34.8%