Use the drop-down menus to determine which state of matter is described in each statement. The atoms in a vare closely packed, but able to slide past each other.
The atoms in a
spread as far apart as possible.
A А
has a definite shape and volume.
The shape of a can change, but the volume is definite.

your parents i think this could be it

  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-

some sources quote the lethal dose, for an average 170lbs opiate-naive individual is between 75 and 375 mg