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Worksheet: Internal Energy of Monatomic and Polyatomic Gasses

Q1:

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?

  • A
  • B
  • C
  • D
  • E

What is the ratio of the atomic mass of gas A to the atomic mass of gas B?

  • A
  • B
  • C
  • D
  • E

Q2:

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 .

  • A K
  • B K
  • C K
  • D K
  • E K