Answer to Question #101277 in General Chemistry for Cassie

General Chemistry

Question #101277

A compound contains 174.86 grams of iron and 74.14 grams of oxygen. Construct the empirical formula.

Expert's answer

Ar(Fe)=55.85

n(Fe)=m/Ar=174.86/55.85=3.13

Ar(O)=16.0

n(O)=74.14/16=4.63

n(O)/n(Fe)=4.63/3.13=3/2, the formula is Fe₂O₃

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