mass of iron = 6g mass of iron oxide = 8.57g mass of oxygen = mass of iron oxide
ID: 700566 • Letter: M
Question
mass of iron = 6g
mass of iron oxide = 8.57g
mass of oxygen = mass of iron oxide-mass of iron
= 8.57 -6 = 2.57g
Element mass of element A.wt no of moles simple ratio simplest ratio
Fe 6 55.85 6/55.85 = 0.107 0.107/0.107 = 1 1*2 = 2
O 2.57 16 2.57/16 = 0.16 0.16/0.107 = 1.5 1.5*2 = 3
The empirical formula Fe2O3
The chemical reaction between iron and oxygen to gives Fe2O3
4Fe + 3O2 --------------------> 2Fe2O3
Explanation / Answer
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