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

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Definitions:

Region of Rejection

The range of values for which the null hypothesis is rejected in favor of the alternative hypothesis in hypothesis testing.

p < .05

Indicates that the probability of the observed data occurring under the null hypothesis is less than 5%, suggesting statistical significance.

Null Hypothesis

The presumption of no association or effect between variables, a stance taken until evidence suggests otherwise.

Probability

A numeric expression, ranging from 0 to 1, indicating the probability of an event happening.