第82页

信息发布者：
C
C
D
B
B
$m(\text{Mg}):m(\text{O}_2):m(\text{MgO}) = 3:2:5$
$m(\text{CO}):m(\text{CuO}):m(\text{Cu}):m(\text{CO}_2)=7:20:16:11$
$m(\text{CaCO}_3):m(\text{HCl}):m(\text{CaCl}_2):m(\text{H}_2\text{O}):m(\text{CO}_2)=100:73:111:18:44$
$\text{CO}$
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