A Thermally Isolated Sample of an Ideal Gas at a Fixed

question 14

Multiple Choice

A thermally isolated sample of an ideal gas at a fixed temperature is confined to one half of a container by an impermeable membrane. The other half of the container is evacuated. The membrane is then pierced and the gas is allowed to expand freely and to double its volume as shown. Which one of the following statements is true concerning this situation?

• A)The process is reversible.
• B)This is an isothermal process.
• C)The entropy of the gas decreases.
• D)The internal energy of the gas must decrease.
• E)The temperature of the gas decreases to one-half of its original value.

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Definitions:

Pneumatophores

Specialized aerial roots found in certain plants like mangroves that facilitate gas exchange in waterlogged environments.

Secondary Vascular Tissues

Tissues in plants that are involved in transporting water, nutrients, and sugars, developed after the primary growth phase.

Periderm

A protective outer layer of tissue in plants, including the cork, which replaces the epidermis in roots and stems of woody plants.

Partly Decayed

Refers to a state of partial decomposition, typically of organic matter, resulting from the action of bacteria and fungi.