Question

^{下列方程式书写正确的是  (     )}

^{A  2Mg  + O2      2MgO}                                                                          

^{B  CO2   + Ca(OH)2 == CaCO3 + H2O}

^{C. CO  + CuO  == Cu + CO2}                                                                                   

^{D. CaCO3     CaO + CO2}

Answer 1

^A