If the coefficient 2 is placed in front of the product tetraiodine nonaoxide (i4o9), then, how many atoms of each element must be accounted for on the otherside of the equation? a) 8 iodine atoms and 18 oxygen atoms b) 4 iodine atoms and 9 oxygen atoms c) 8 iodine atoms and 9 oxygen atoms d) 9 iodine atoms and 4 oxygen atoms e) 18 iodine atoms and 9 oxygen atoms

a) 8 iodine atoms and 18 oxygen atoms

Explanation:-

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

Thus if the product is , there are 4 atoms of iodine and 9 atoms of oxygen.When a coefficient 2 is placed in front of the product tetraiodine nonaoxide , there will be 8 atoms of iodine and 18 atoms of oxygen. Thus the reactants must also have 8 atom of iodine and 18 atoms of oxygen.

explanation:

detials on each model with digrams

  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-