Learning Goal: use degrees of freedom to analyze energy properties of a diatomic ideal gas.
What is the internal energy $U_{i,gas}$ of the gas?
$U_{i,gas}$ =
Suppose that 4.10 moles of an ideal diatomic gas have a temperature of 1150 K, and that each molecule has a mass of $2.32 \times 10^{-26}$ kg. Each molecule can move in three dimensions, rotate in two dimensions, and vibrate in one dimension as the bond between the atoms stretches and compresses.
Recall that the number of gas molecules equals Avogadro's number ($6.022 \times 10^{23}$ mol$^{-1}$) times the number of moles of the gas.
