1)MrCO2=100g - 64.8g=35.2g
2)解;设生成碳酸钙Xg
CaCo3=Cao+ Co2(反应条件为高温)
100 44
X 35.2g
X =80g
MrCaCo3=80g/100g=80%
纯手工,望采纳.