CBSE Class 11-science Answered
determine molecular formula of am oxide of iron in which mass% of iron is 69.9 & of oxygen is 30.1
Asked by | 12 Jul, 2008, 09:24: PM
Expert Answer
ELEMENTS ATOMIC MASS % RELATIVE SIMPLE WHOLE
No. of no ratio no ratio
Moles
Fe 56 69.9 69.9/56 1.24/1.24 1X 2=2
O 16 30.1 30.1/16 1.88/1.24 1.5 x2=3
So the molecular formula is Fe2O3
Answered by | 15 Jul, 2008, 03:06: PM
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