chemistry

posted by .

How many atoms of iron (Fe) are present in 4.0g of iron

  • chemistry -

    How many mols do you have? That's 4.0g/atomic mass Fe = ?
    Now remember 1 mol contains 6.02E23 atoms.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. chemistry

    The atomic mass of iron oxide is 160 atomic mass units. What is the atomic mass of iron if a molecule of iron oxide consists of tow atoms of iron and three atoms of oxgen?
  2. chemistry

    Rust contains an iron-oxygen compound in which there are three oxygen atoms for each two iron atoms. In this compound, the iron to oxygen mass ratio is 2.325:1. Another compound of iron and oxygen contains these elements in the ratio …
  3. physics

    An iron wire has a cross-sectional area equal to 1.20 10-5 m2. Carry out the following steps to determine the drift speed of the conduction electrons in the wire if it carries a current of 34.0 A. (a) How many kilograms are there in …
  4. Chemistry

    4Fe + 3O2 = 2Fe2O3 So in math book it say " You can interpret this equation in terms of representative particles by saying that four atoms of iron react with three molecules of oxygen to produce two formula unit of iron(iii) oxide" …
  5. Chemistry

    The specfic heat of iron is 0.11cal/g C. The heat of fusion of iron, the heat required to convert iron from a solid to liquid at its melting point, is 63.7cal/g. Iron melts at 1530 C. How much heat must be added to 2g of iron at 25c …
  6. Chemistry

    A couple questions here: 1. How do you expect nitriding to change the properties of iron?
  7. Algebra

    The density of iron is 7.87 g/cm3, and the average mass for one iron atom is 9.28×10-23 g. How many atoms are there in a rectangular iron ingot measuring 3.00 cm × 3.00 cm × 9.00 cm?
  8. chemistry

    Solud iron and steam react at high temperatures to form iron(vi) peroxide and hydrogen gas. How much solid iron is needed to obtained 405 grams of iron(vi) peroxide, with a 84.2% yield?
  9. Chem11

    How many moles of iron(iii) chloride could be made with an unlimited supply of iron atoms but only 1.81 X 10e23 chlorine atoms?
  10. chemistry

    can some one help me with a few chem questions please. A chunk of iron weighs 4.32 g. a) How many iron atoms are there in this sample?

More Similar Questions