1. The problem statement, all variables and given/known data A small material has quantum oscillator energy levels 2E-23 J apart. Suppose the material has a total energy of 34E-23 J and contains 5 atoms. Find the entropy of the material. 2. Relevant equations Entropy = (Boltzmann's constant)*ln(multiplicity) Multiplicity = (q + N - 1)!/[q!(N-1)!] 3. The attempt at a solution I'm having trouble grasping the question. The 5 atoms are understood, but I'm having trouble finding the "N" for the multiplicity equation. So, I came up with N = 18, because the total energy is 34E-23 J and the energy levels are 2E-23 J apart, and q = 5. Then applying the multiplicity equation and plugging it to entropy, I didn't get the correct answer. Am I on the correct path to find N, or do I even need the multiplicity equation?