What is the empirical formula of a compound containing 65.5 grams carbon, 5.5 grams hydrogen, and 29.0 grams oxygen? (5 points) Select one: a. C3H3O b. C4H4O c. C3H2O2 d. C2H3O2

  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-

ugh fiel iente of insistí is did kiwis jaj

since electrons are negative the answer is neagtaive