The recommended calcium intake for teenagers is 1300 mg per day. a glass of milk contains 305 mg of calcium. one glass contains a volume of 8 fluid ounces. how many liters of milk should a teenager drink per day to get the recommended amount of calcium? one fluid ounce equals 29.6 ml

  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-

the answer is 0.42 is that is an option. this question provides no info