Respuesta :

Answer:

CaCO[tex]_{3s}[/tex]  →  CO[tex]_{2g}[/tex]   +   CaO[tex]_{s}[/tex]  

Explanation:

Given reactants:

 Omar heated small piece of calcium carbonate

Product;

  it gave off carbon dioxide gas and solid calcium oxide;

Problem,

Equation of the reaction;

Solution:

 

 Calcium carbonate →  Carbon dioxide + Calcium oxide

           CaCO[tex]_{3s}[/tex]  →  CO[tex]_{2g}[/tex]   +   CaO[tex]_{s}[/tex]