第76页 - 通城学典课时作业本九年级化学鲁教版江苏专版

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