Ответ:
1. H2S, As2O5, HF, Fe2O3
2. H3PO4, BaO, Mg(OH)2, Na2SiO3
3. M(Mg(OH)2)=58г/моль. w(O)= 32/58 *100%=55,17%
4. w(соли) = 15/65 * 100%=23,1%
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Answers & Comments
Ответ:
1. H2S, As2O5, HF, Fe2O3
2. H3PO4, BaO, Mg(OH)2, Na2SiO3
3. M(Mg(OH)2)=58г/моль. w(O)= 32/58 *100%=55,17%
4. w(соли) = 15/65 * 100%=23,1%