Lesson: Internal energy of Monatomic and Polyatomic GassesPhysics
In this lesson, we will learn how to calculate the division of a gas’s internal energy between translational, rotational, and vibrational energies according to its particles' degrees of freedom.
Sample Question Videos
Worksheet: 7 Questions • 1 Video
What is the average mechanical energy of a mole of an ideal monatomic gas at a temperature of 333 K?
Two monatomic ideal gases A and B are at the same temperature. 1.0 g of gas A has the same internal energy as 0.10 g of gas B.
What is the ratio of the number of moles in gas A to the number of moles in gas B?
What is the ratio of the atomic mass of gas A to the atomic mass of gas B?
To give a helium atom nonzero angular momentum requires 21.2 eV of energy, meaning that 21.2 eV is the difference between the energies of helium’s ground state and of the lowest-energy state in which a helium atom has nonzero angular momentum. Find the lowest temperature at which helium atoms possess angular momentum if the energy required to give a helium atom nonzero momentum equals Boltzmann’s constant multiplied by .