Posts by Ex

Total # Posts: 6

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.

English
What is the difference between paradox and irony?

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

space
atmophere is the air surronding the earth. k

9th grade algebra
answer bak!!!!!!!!!!

9th grade algebra
need some work to do dou knoe where to find it