Question

⦁ Which of the following has the greatest Fe content: FeS, Fe2(SO4)3, or FeCl2? Complete calculations must be shown to support your choice. (

Answer 1

Fe2(SO4)3 has the greater iron content.

Step-by-step explanation:

Hello!

In this case, considering the content of a specific element in a compound, we must take into account the subscript is has in the formula, for instance FeS has one iron atom, Fe2(SO4)3 has two iron atoms and FeCl2 has one iron atom; thus, by assuming one mole of each compound, we can compute the moles of iron there:

`n_(Fe)^(FeS)=1molFeS*(1molFe)/(1molFeS)=1molFe \\\\n_(Fe)^(Fe_2(SO_4)_3)=1molFe_2(SO_4)_3*(2molFe)/(1molFe_2(SO_4)_3)=2molFe\\\\n_(Fe)^(FeCl_2)=1molFeCl_2*(1molFe)/(1molFeCl_2)=1molFe`

It means that Fe2(SO4)3 would have the greatest iron content.

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