aatkinson27
Answered

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when 5.60g of an iron oxide is heated with carbon, 3.92g of iron is produced. calculate the empirical formula of the iron oxide

Sagot :

rspill6

Answer:  Fe2O3

Explanation:

  5.60 g Iron Oxide

-  3.92 g Iron

===========

=  1.68 g Oxygen

Convert Fe and O to moles:

3.92 g Iron/55.85 = 0.0702 moles Fe

1.68 g Oxygen/16 = 0.105 moles O

The ratio of O to Fe is 1.50.  There are 3/2 O for each Fe.  Multiply by 2 to get whole numbers:  2Fe for every 3O:  Fe2O3

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