Chemistry Please Help

Iron is found in Earths crust as several different iron compounds. Calculate the mass (in kg) of each compound that contains 1.0 x 10E3 kg of iron.
Fe2O3
Please help step by step

  1. 👍 0
  2. 👎 0
  3. 👁 886
  1. I assume your 1.0 x 10E3 kg is your way of writing 1.0E3 kg.
    There is a shortcut you can use that is not taught in classrooms anymore (at least I don't think so) called using a chemical factor. Here is how you do it the simple way.
    1E3kg x (molar mass Fe2O3/2*atomic masss Fe) = ??kg Fe2O3.
    The part in parentheses is the chemical factor.

    1. 👍 0
    2. 👎 0
  2. So this is what I did
    1E6kg x 1 mole Fe/55.85g= 17905 moles Fe
    17905 mole Fe x 1 mol Fe2o3/2mol Fe *159.70g/1moleFe2O3* 1kg/1000= 1429kg

    1. 👍 0
    2. 👎 0
    posted by Monique
  3. Monique I have a question although this problem is from like 5 years ago. Where did you get the 6 from th 1E6kg? Should it be 1E3 Kg?

    1. 👍 0
    2. 👎 0
    posted by Phillip

Respond to this Question

First Name

Your Response

Similar Questions

  1. earth science

    which of the following element are found in the Earths crust? iron oxygen calcium all of the above

    asked by ? on January 13, 2013
  2. chemistry

    A 0.1943g iron ore sample was dissolved in hydrochloric acid and the iron was obtained as Fe 2+ (aq). The iron solution was titrated with Ce 4+ solution according to the balanced chemical reaction shown below.After calculation, it

    asked by matt on October 17, 2010
  3. Chemistry

    Iron ores have different amounts of iron per kilogram of ore. Calculate the mass percent composition of iron for each iron ore: Fe2O3{\rm Fe_2O_3} (hematite), Fe3O4{\rm Fe_3O_4} (magnetite), FeCO3{\rm FeCO_3} (siderite).

    asked by Ana on March 5, 2014
  4. CHEMISTRY

    A 70g sample of iron ore(Fe2O3) was analyzed for Iron and found to contain 1700 Fe. Calculate the percentage of iron in the sample.

    asked by JOSEPH BANDA on January 7, 2017
  5. Chemistry

    I know how to find a and b on this problem but how do I find c? Really would appreciate the help, thanks! The formula of a compound of iron and sulfur was determined using the method of mass measurements. A sample of iron was

    asked by Jenny on February 21, 2010
  6. Chemistry

    A 0.1300 g iron ore sample was dissolved in hydrochloric acid and the iron was obtained as Fe2+(aq). The iron solution was titrated with Ce4+ solution according to the balanced chemical reaction shown below. After calculation, it

    asked by Bob on March 13, 2009
  7. Astronomy

    Rank the following hypothetical planets -- all of which have the same total mass and same radius -- from lowest moment of inertia to highest moment of inertia: 1) A uniform sphere of mixed up rock and iron 2) A hollow sphere 3) A

    asked by qwerty on April 21, 2014
  8. Chemistry

    I just completed a titration lab and the balanced equation is (8H^+)+MnO4^- + 5Fe (^2+) ---> Mn + 4 H20 + 5 Fe(^3+) I'm supposed to calculate the moles of permanganate, Fe^2+ and the mass of iron from the sample. The volume of

    asked by Sven on September 3, 2007
  9. Redox Titration questions!

    Oh goodness, I'm such a pain! I need some help with these! How do I calculate the percentage? How do I start it? 2. Imagine that you ran a similar titration using a different iron sample with 0.02 M KMnO4 as the titrant. Calculate

    asked by Angel on June 11, 2008
  10. chemistry 11 grade

    A piece of iron wire weighs 2.225g. It is dissolved in acid, which oxidizes the iron to iron(II), and made up to 250 mL. A 25mL sample required 31.0 mL of a 0.0185mol/L solution of potassium dichromate. Calculate the percentage of

    asked by Farah on January 2, 2011

More Similar Questions