If you know that the Fermi level is 0.87 higher than the covalent beam, and that the energy gap of a substance equal to 37 , 27C Ne 2.8 x 10 atomfem is 1.12 in degrees = 1.04 x 10 * atom/cm and 27/8 * 10 x 8.5 = k, then the concentration of the syntax is equal to