In 1979, an extremely low pressure of 87 kPa was measured in a storm over 4 the Pacific Ocean. Suppose a gas is compressed at this pressure and its
volume decreases by 25.0 x 10^3 m3. How much work is done by the gas?

An electron is trapped at a defect in a crystal. the defect may be modeled as a one-dimensional, rigid-walled box of width 1.00 nm. (a) sketch the wavefunctions and probability densities for the n 1 and n 2 states. (b) for the n 1 state, nd the probability of nding the electron between x1 0.15 nm and x2 0.35 nm, where x 0 is the left side of the box. (c) repeat (b) for the n 2 state. (d) calculate the energies in electron volts of the n 1 and n 2 states