Ответ:
1) 3Fe+4H2O =Fe3O4 +4H2
2) 4B+3O2=2B2O3
3) Na3P+3H2O =PH3+3NaOH
4) 2Al+3CuCl2=2AlCl3+3Cu
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Ответ:
1) 3Fe+4H2O =Fe3O4 +4H2
2) 4B+3O2=2B2O3
3) Na3P+3H2O =PH3+3NaOH
4) 2Al+3CuCl2=2AlCl3+3Cu