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24 July, 16:41

If i have 15.7g of sulfur, how do i work out how much iron is needed to make iron sulfide

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  1. 24 July, 16:45
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    Mass = 27.4 g

    Explanation:

    Given dа ta:

    Mass of sulfur = 15.7 g

    Mass of iron = ?

    Solution:

    Chemical equation:

    Fe + S → FeS

    Number of moles of sulfur:

    Number of moles = 15.7 g/32 g/mol

    Number of moles = 0.49 mol

    Now we will compare the moles of sulfur with iron

    S : Fe

    1 : 1

    0.49 : 0.49

    Mass of iron:

    Mass = number of moles * molar mass

    Mass = 0.49 mol * 55.85 g/mol

    Mass = 27.4 g
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