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信息发布者:
C
D
C
D
B
​$\mathrm {m}(\mathrm {Mg)} ∶\mathrm {m}(\mathrm {O}_{2}\mathrm {)}∶ \mathrm {m}(\mathrm {MgO)}=3 ∶ 2 ∶ 5$​
​$\mathrm {m}(\mathrm {CO)} ∶ \mathrm {m}(\mathrm {CuO)} ∶ \mathrm {m}(\mathrm {Cu)} ∶ \mathrm {m}(\mathrm {CO}_{2}\mathrm {)}=7 ∶ 20 ∶ 16 ∶ 11$​
​$\mathrm {m}(\mathrm {CaCO}_{3}\mathrm {)} ∶ \mathrm {m}(\mathrm {HCl)} ∶\mathrm {m}(\mathrm {CaCl}_{2}\mathrm {)}∶\mathrm {m}(\mathrm {HO}_{2}\mathrm {)} ∶$​
​$ \mathrm {m}(\mathrm {CO}_{2}\mathrm {)}=100∶73∶111∶18∶44$​
CO