How do you balance #CaCO_3 -> CaO + CO_2#? Chemistry Chemical Reactions Balancing Chemical Equations 1 Answer S.S Sep 27, 2016 It is balanced already. Explanation: #color(red)(Ca)color(blue)(C)color(green)(O_3) to# # color(red)(Ca)color(green)(O) + color(blue)(C)color(green)(O_2)# Answer link Related questions When balancing equations, which numbers are you allowed to change? why only these? How do I get the chemical equation of aniline to phenylisocyanide? What is a balanced equation? Can you write a balanced equation for BCl3 (g)+H2O (l)-------> H3BO3 (s)+HCl (g)? What is the balanced equation for the chemical reaction #Mg_3N_2+2H_2O -> Mg(OH)_2+NH_3#? Why do chemical equations need to be balanced? How can I balance this chemical equations? Aluminum and hydrochloric acid react to form aluminum... How can I balance this chemical equation? Sodium phosphate and calcium chloride react to form... How can I balance this equation? ____ #KClO_3 -># ____ #KCl +# ____ #O_2# Why is balancing chemical equations important? See all questions in Balancing Chemical Equations Impact of this question 1339 views around the world You can reuse this answer Creative Commons License