40 |
100 |
1.25g |
2.5g |
A.+4 | B.+3 | C.+2 | D.+l |
A.水(H2O)m(H):m(O)=2:1 | B.乙烯(C2H4) m(C):m(H)=6:1 |
C.一氧化碳(CO)m(C):m(O)=1:1 | D.硝酸(HNO3) m(N):m(O)=7:12 |
A.0.5X% | B.1-1.5X% | C.2X% | D.1-7X% |
A.FeO | B.Fe(OH)3 | C.Fe2O3 | D.Fe3O4 |
A.6X% | B.1-2X% | C.1-7X% | D.2X% |
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