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christinewilliams

What is the formula mass of FeO3?

  • one year ago
  • one year ago

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  1. christinewilliams
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    can you show me how to do it with all your work make sure it is the correct unit labels please! thank you

    • one year ago
  2. NotTim
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    What's a formula mass?

    • one year ago
  3. Tttaammmaannnaa
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    55.847 (mass of Fe) + 3(15.999) (mass of 3 oxygen's) = 103.844 g

    • one year ago
  4. christinewilliams
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    wait thats the formula of it?

    • one year ago
  5. Tttaammmaannnaa
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    that is how you find the formula mass.

    • one year ago
  6. christinewilliams
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    im confused now

    • one year ago
  7. Tttaammmaannnaa
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    there is one Iron, Fe, and 3 Oxygen, O. So you add the Fe, 55.847 + 3*15.999, which is the mass of oxygen. the mass of oxygen is 15.999 but since there are 3 of them you have to multiply 3 and 15.999 and add that to 55.847 to get the total mass which is 103.844 g.

    • one year ago
  8. abb0t
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    To find the mass of the formula, you look at the periodic table Fe = ______ g O = 3( ______)g you mutiply by three b/ there are 3 oxygens. You then proceed to add evrything to get the mass.

    • one year ago
  9. NotTim
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    Do it steps @Tttaammmaannnaa

    • one year ago
  10. christinewilliams
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    so the mass os 103.844 right?

    • one year ago
  11. Tttaammmaannnaa
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    Since there is one Iron, Fe. the mass is 55.487. The mass of 3 oxygen's is 47.997. Add 55.487 and 47.997 and you get 103.844

    • one year ago
  12. Tttaammmaannnaa
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    the mass of Fe is 55.847. sorry

    • one year ago
  13. christinewilliams
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    so the answer is 103.844

    • one year ago
  14. Tttaammmaannnaa
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    yes

    • one year ago
  15. christinewilliams
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    ok thank you so much that helped a lot thank you again!

    • one year ago
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