Задание. «Расставь коэффициенты»
1) P + Cl2 →PCl5
2) Na + S → Na2S
3) HCl + Mg →MgCl2 + H2
4) N2 + H2 →NH3
5) H2O → H2 + O2
1) P + Cl2 →PCl5
2) Na + S → Na2S
3) HCl + Mg →MgCl2 + H2
4) N2 + H2 →NH3
5) H2O → H2 + O2
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2)2Na+S→Na2S
3)2HCl+Mg→MgCl2+H2
4)N2+3H2→2NH3
5)2H2+O2→2H2O