Posts by Ex

Total # Posts: 6

  1. Chemistry

    Knowing that the energy associated with the formation of 1 mole of vacancies in copper (Cu) is 104 kJ, determine the vacancy density (nv/cm3) in Cu at 1139 K. Assume the pre-exponential factor is one.
  2. English

    What is the difference between paradox and irony?
  3. math

    what is 2x+9(4)*5+25=?
  4. space

    atmophere is the air surronding the earth. k
  5. 9th grade algebra

    answer bak!!!!!!!!!!
  6. 9th grade algebra

    need some work to do dou knoe where to find it