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已知：C(s)+ O 2 (g) CO(g) Δ H 1 = —110.5 kJ/mol CO(g)+ O 2 (g) CO 2 (g) Δ H 2 = —283.0 kJ/mol 则反应C(s)+O 2 (g) CO 2 (g)的反应热为( )A.
172.5 kJ/mol
B.
—172.5 kJ/mol
C.
393.5 kJ/mol
D.
—393.5 kJ/mol
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