Ответ:
1.
K, Ca, N, Si, Se
2.
1(SO2, H2SO4)
3.
Mg3P2. Mn2O4. FeC2
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Answers & Comments
Ответ:
1.
K, Ca, N, Si, Se
2.
1(SO2, H2SO4)
3.
Mg3P2. Mn2O4. FeC2