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SOVA2 [1]
3 years ago
7

Determine the mass fraction of iron in its compounds:Please!

Chemistry
1 answer:
erik [133]3 years ago
6 0

Answer:

Fe(NO₃)₃ = 0.23; FeCl₃ = 0.34

Explanation:

Mass fraction is defined as the ratio between the mass of iron in 1 mol of the compound and the mass of the complete compound.

In Fe(NO₃)₃ there is just 1 atom of Fe that has a molar mass of 55.845g/mol. The molar mass of this compound is 241.86g/mol. Thus, mass fraction is:

55.845g/mol / 241.86g/mol =

<h3>Fe(NO₃)₃ = 0.23</h3><h3 />

In FeCl₃ there is 1 atom of Fe that has a molar mass of 55.845g/mol. The molar mass of this compound is 162.2g/mol. Thus, mass fraction is:

55.845g/mol / 162.2g/mol =

<h3>FeCl₃ = 0.34</h3>
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