Ответ:
1)2Na+H2SO4 =Na2SO4 +H2
2)3Ca+2FeCl3=3CaCl2 +2Fe
3)2C+O2=2CO
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Ответ:
1)2Na+H2SO4 =Na2SO4 +H2
2)3Ca+2FeCl3=3CaCl2 +2Fe
3)2C+O2=2CO