An Ideal Gas Is Allowed to Undergo a Free Expansion

question 44

Multiple Choice

An ideal gas is allowed to undergo a free expansion. If its initial volume is V₁ and its final volume is V₂, the change in entropy is

• A) nR ln (V₂/V₁)
• B) nRT ln (V₂/V₁)
• C) nk ln (V₂/V₁)
• D) 0
• E) nR V₂/V₁

---

Definitions:

Random Samples

Selections made in such a way that each member of a population has an equal chance of being included, ensuring the sample's representativeness of the whole.

F-test

A statistical test used to compare the variances of two samples to determine if they come from populations with equal variances.

Population Variances

A measure of the variability or spread of a population's data points, representing the average of the squared deviations from the mean.

Two-tail Test

A statistical test used to determine whether there is a significant difference between a sample and a population mean in either direction.