A 10-L Flask and a 1-L Flask Each Contain Two $25 ^ { \circ } \mathrm { C }$

question 26

Multiple Choice

A 10-L flask and a 1-L flask each contain two moles of ideal diatomic gas (but not the same gas) at $25 ^ { \circ } \mathrm { C }$ . Which of the following statements about these gases must be true? (There could be more than one correct choice.)

• A) The internal (thermal) energy of the gas in the smaller flask is greater than the internal (thermal) energy of the gas in the larger flask.
• B) The molecules in the larger flask have the same root-mean-square speed as those in the smaller flask.
• C) The internal (thermal) energy of the gas in the larger flask is greater than the internal (thermal) energy of the gas in the smaller flask.
• D) The molecules in the smaller flask have the same average kinetic energy per molecule as those in the larger flask.
• E) The internal (thermal) energy of the gas in both flasks is the same.