The reaction, A + 2 B → products, was studied. A timer was started when reagents A and B were mixed and stopped when a certain quantity of product C accumulated. The data contains initial amounts of reactants used and the time needed to reach the set quantity of C. Experiment [A] [B] Time (secs) 1 0.100 0.140 25 2 0.050 0.140 50 3 0.100 0.070 100 We can conclude that:.

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  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 true. hope it .