A 25 g sample of iron (initially at 800.00ºC) is dropped into 200. g of water (initially at 30.00ºC). The final temperature of the system is 40.22ºC. Find the specific heat of iron. Specific Heat of Water: 4.184 J/gºC or 1.00 cal/gºC

neutrons are in the middle of the atom and the electrons, which are much smaller.

  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-