What is the nuclear binding energy of an atom that has a mass defect of 5.0446 x 10–^29 kg? Use E = mc2. (Remember: The speed of light is approximately 3.00 x 10^8 m/s.) 5.61 x 10-^46 J 1.51 x 10-^20 J 4.54 x 10-^12 J 1.78 x 10^45 J

explanation:

i think option no d is the correct answer

  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-