7. Engineer It Preventing charge from building up on objects is necessary on some job sites. The buildup of charge may be a safety hazard or could damage
products. A company wants to design a device to minimize the buildup of charge
on an object. Which of the following materials would be the best choice to make
such a device out of?
A. aluminum, which transfers charge quickly
B. rubber, which barely transfers charge
C. a new plastic, which transfers charge at a moderate rate

  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-

c. orbital shape i hope this is correct