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Cerrena [4.2K]
3 years ago
10

A sample of black mineral hematite, an oxide of iron found in many iron ores, contains 34.97g of iron and 15.03g of oxygen. what

is the empirical formula of hematite?​
Chemistry
1 answer:
Vanyuwa [196]3 years ago
8 0

The empirical formula : Fe₂O₃

<h3>Further explanation</h3>

Given

34.97g of Iron

15.03g of Oxygen

Required

The empirical formula

Solution

Mol ratio :

Fe(Iron) : 34.97 g : 56 g/mol = 0.624

O(Oxygen) : 15.03 g : 16 g/mol = 0.939

Divide by 0.624 :

Fe : O = 1 : 1.5

Fe : O = 2 : 3

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