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tanja2601

5 - 9 классы

H2O2➡?➡P2O5➡H3PO4➡K3PO4=...
Answer
Срочно! 1)Mg➡MgO➡MgCl2➡Mg(OH)2➡MgSO4 2)C➡CO2➡CaCO3➡CO2➡ Na2CO3...
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