March 2022 0 3 Report
Нужно расставить заряды над каждым элементом: 1)PCl3+3H2O=H3PO3+3HCl
2)4H3PO3=3H3PO4+PH3↑
3)H3PO4+KOH=K3PO4+H2O
4)K3PO4+AgNO3=KNO3+Ag3PO4
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