18. For a certain molecule in a system at 500 K, the energies of the various quantum states, measured relative to the ground state, are given by e = n * 0.1 eV, n = 0, 1, 2.
a) To three significant figures, what is the value of the constant C in the formula P = Ce^(-s)?
b) What is the probability that the molecule is in the level n-1?
c) The probability that it is in the level n-2 is 1 + x + x^2 + x^3 = 1/1x.