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how much iron can be obtained by the reduction of 1kg of Fe2o3
Reduction of 1 kg of Fe2O3 requires 0.0583 kg of CO. In Fe2O3 there are 2 atoms of iron and 3 atoms of oxygen. Iron has relative atomic mass of 56 and oxygen has a relative atomic mass of 16.
 This means that iron oxide has a relative formula mass  of
 
There are 2 atoms of iron in iron oxide , which have a relative mass of 2 x 56 =112.
% mass of iron in iron oxide is
% mass = (112/160) * 100
              = 70%


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