The table shows the relative atomic masses of some common elements. Use this information to work out the relative formula mass of the compound with the formula shown below the table.
Relative atomke mere
1
bytogon
carbon
nitrogen
12
14
15
sodium
23
24
magnesium
phosphorus
31
32
chlorine
355
colum
0
ron
56
Fe2 Soal

  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-

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