For so2 at 25 °c, (a) evaluate the thermal wavelength, (b) evaluate the translational partition function wavelength in a container of volume 1.0 cm3, (c) calculate the rotational partition function from its rotational constants 2.02736 cm1, 0.34417 cm1, and 0.293535 cm 1. (d) above what temperature is the high-temperature approximation valid to within 10 per cent of the true value? (e) calculate the rotational contribution to the molar entropy.

Antireflective coatings on solar cells are often made by applying a thin film of silicon nitride (sinx), which has an index of refractive of 1.2, on the top of the silicon solar cell, which has a refractive index of about 3.5. however, the sun emits radiation of various wavelengths which the solar cell absorbs, and the antireflective coating can only absolutely minimize the reflection of one of these wavelengths. the coating thickness is chosen to reduce the reflection of green/yellow light (e = 2.2 ev), which is the most intense color in the solar spectrum (shown below). which of the following coatings would minimize reflection of green/yellow light? the answer is 820 nm how? what is the angular width of the central maximum of an electron traveling at 2 x 108 m/s going through a single slit of width 1 mm.