Напишите ox-red этих уравнений:
1) CuS+HNO3=Cu(NO3)2+NO+S+H2O
2)S+HNO3=H2sO4+NO2+H2O
3)P+HNO3+H2O=H3PO4+NO
4)KClO3+HCl=KCl+Cl2+H2O
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