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N asked in Science & MathematicsChemistry · 1 decade ago

How many moles of Fe are in 150 grams of Fe2O3?

Update:

please explain answer!

Update 2:

first legit anwer gets 10 points!

Update 3:

*first legit answer gets 10 points!

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  • Lexi R
    Lv 7
    1 decade ago
    Favorite Answer

    work out moles of Fe2O3

    moles = mass / molar mass

    moles Fe2O3 = 150 g / 159.7 g/mol

    = 0.9393 moles Fe2O3

    Each Fe2O3 has 2 moles of Fe in it

    Therefore moles Fe = 2 x 0.9393 moles

    = 1.8785 moles Fe

    mass = molar mass x moles

    mass (Fe) = 1.8785 mol x 55.85 g/mol

    = 104.92 g

    = 105 g

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