Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Material science: Imperfections in solids

  1. Jun 23, 2012 #1
    Determine the number of vacancies per cm^3 needed for a BCC iron crystal to have a density of 7.87 g/cm^3. The lattice parameter of the iron is 2.866x10^-8 cm and the atomic weight of the iron is 55.847 g/mol. Given: Avogradro's number, N=6.022x10^23 atoms/mol

    Help please? i have no idea how to solve this question :( im gona have my first test for material science on wednesday!!
     
  2. jcsd
  3. Jun 23, 2012 #2

    Astronuc

    User Avatar

    Staff: Mentor

    How many atoms in a unit cell? How many unit cells in 1 cm3? What is the average mass of an iron atom?

    What is the theoretical mass of a cm3 of Fe?
     
  4. Jun 23, 2012 #3
    theyre not given:( that is why im having a hard time solving the question now sir
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Material science: Imperfections in solids
  1. Material Science (Replies: 1)

Loading...