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ThermodynamicsMCQ

A 1.0 mol sample of He(g) at 25°C is mixed with a 1.0 mol sample of Xe(g) at 50°C. Which of the follThermodynamics Chemistry Question

Question

A 1.0 mol sample of He(g) at 25°C is mixed with a 1.0 mol sample of Xe(g) at 50°C. Which of the following correctly predicts the changes in average kinetic energy and the average speed of the Xe(g) atoms that will occur as the mixture approaches thermal equilibrium?

A.

Average Kinetic Energy of Xe Atoms: Will increase; Average Speed of Xe Atoms: Will increase

B.

Average Kinetic Energy of Xe Atoms: Will increase; Average Speed of Xe Atoms: Will decrease

C.

Average Kinetic Energy of Xe Atoms: Will decrease; Average Speed of Xe Atoms: Will increase

D.

Average Kinetic Energy of Xe Atoms: Will decrease; Average Speed of Xe Atoms: Will decrease

✓ Correct
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