ПОМОГИТЕ ПЖ 50 БАЛЛОВ!!!!! 8 КЛАСС ХИМИЯ
C+O₂=?
S+O₂=?
P+O₂=?

N₂+?=NO-Q
Mg+?=MgO
Fe+?=Fe₃O₄

Ca+O₂=?
Cu+?=CuO
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