Two Tanks of Gas, One of Hydrogen, H₂, and One

question 27

Multiple Choice

Two tanks of gas, one of hydrogen, H₂, and one of helium, He, contain equal masses of gas. The gram-molecular mass of He is twice that of H₂. Both tanks of gas are at the same temperature, 293 K. Which statement(s) below is(are) correct when we ignore vibrational motion?

• A) The total internal energy of the hydrogen is the same as that of the helium.
• B) The total internal energy of the hydrogen is 167 times that of the helium.
• C) The total internal energy of the helium is 1.67 times that of the hydrogen.
• D) The total internal energy of the hydrogen is 3.33 times that of the helium.
• E) The total internal energy of the helium is 3.33 times that of the hydrogen.

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