(1)12X75%=9t(2)设可制生石灰的质量为xtCaCO3=CaO+CO2 100 56 9t X 100X=504 x=5.04t答:可制造生石灰5.04t
1.M(CaCO3)=12t×75%=9t2.CaCO3=△=CaO+CO2↑ 100 56 9t x x=56×9t÷100=5.04t