Help please|| will mark brainlest || 10 pts <3 In which equation is carbon dioxide a product?
Group of answer choices

CH4 + 2O2 --> CO2 + 2H2O

CO2 --> C + O2

2H2O --> 2H2 + O2

6CO2 + 6H2O --> C6H12O6 +

  the   balanced   equation   for   reaction of   ca metal   with   o2 to   produce   cao   is as below

2 ca+ o2→ 2 cao2

  explanation

the reaction is   balanced     since the   number of atoms   in reactant side is   equal to   number of atoms   in   product side.   for   example   they   are 2   atom of   ca in   reactant   side   and   2   atoms of ca   in   the product side.

  the   process   is a   meet the   requirement   of   redox   reaction because :     calcium   is   oxidized   from   oxidation state 0   to 2+   while   oxygen   is reduced from   oxidation   state   0   to 2-

i think the answer is terrae but not 100 percent sure. ▓▬▬ §