Calculate the number of Fe atoms in one gram of iron at 900C which at any instant during one second possess a vibrational energy of 4.8 x 10^-19 or greater. Assume the atomic vibrational frequency is 1.2 x 10^12.

b. (15 pts.) Calculate the number of Fe atoms in one gram of iron at 900C which at any instant during one second possess a vibrational energy of 4.81019 or greater. Assume the atomic vibrational frequency is 11012s1