Can anyone help me with ANY of the following topics: The concept of the wave packet as determining particle size. Energies of the Harmonic Oscillator. The eigenvalues of observables are real-valued and correspons to hermitial operators. How do we compute the expectation value of the momentum operator, given the wave-function? How does the wave-function behave in classically forbidden regions? (Exponential decay with a length computed as?) The degeneracy of angular momentum eigenstates. Eigen-values of the Lz operator. Reduced mass of two objects. Moment of inertia and the rotational energies. The shape and extent of the hydrogenic orbitals, how to compute the overlap, and the orthogonality of distinct orbitals. Normalization of a wave-function in a continuous space. Concepts of ground and excited states. Energy spacing of the particle in the box. Commutators of simple operators that are combinations of coordinate and momentum. Any help is much appreciated.