Two Tanks, Both of Volume 10 L, Are Connected by a Valve

question 69

Multiple Choice

Two tanks, both of volume 10 L, are connected by a valve and are thermally isolated. One tank contains 1mole of ⁴He at 280 K and the other tank contains 1 mole O₂ at 300 K. The valve is then opened and the gases allowed to mix. What is the final temperature after the gases have come to equilibrium?

• A) 290 K
• B) 295 K
• C) 285 K
• D) 293 K
• E) 287 K

---

Definitions:

Behavior Modification

A formal technique for promoting the frequency of desirable behaviors and decreasing the incidence of unwanted ones.

Reinforcement

In behavioral psychology, a process by which a behavior is strengthened or increased, often through rewards or consequences.

Cognitive Development

The process by which individuals acquire and understand knowledge through thought, experience, and the senses, encompassing learning, memory, problem-solving, and decision-making.

Assimilation

A cognitive process where individuals integrate new information into their existing knowledge base or framework.