Пожалуйста срочно!!!поставьте коэффициенты если необходимо: 1)HCl+NaOH+NaCl+H20; 2)HNO2+Ca(OH)2=Ca(NO3)2+H2O; 3)2H2O=2H2+O2-571,6кДж;
4)SO2+H2O=H2SO3;
5)NaOH+H3PO4=Na3PO4+H2O
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