If you were asked to convert 4.2 x 1022 atoms of aluminum to moles, which of the following should you use for the conversion? (2 points) fraction six point zero two two times ten to twenty third power atoms al over thirteen mol al fraction one mol al over twenty six point nine eight one atoms al fraction one mol al over thirteen point zero atoms al fraction one mol al over six point zero two two times ten to twenty third power atoms al

what is the volume occupied by 40 grams of argon gas (ar) at standard conditions? what volume, in liters, is occupied by 1.5 x 1023 

  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-