The Root-Mean-Square Velocity of a Gas in a Closed Container

question 59

Multiple Choice

The root-mean-square velocity of a gas in a closed container of fixed volume is increased from 345 m/s to 690 m/s. Which one of the following statements might explain correctly how this change was accomplished?

• A) By pumping in more gas at constant temperature, the pressure was quadrupled.
• B) By heating the gas, the temperature was doubled.
• C) By heating the gas, the pressure was quadrupled.
• D) By pumping out 75% of the gas at constant temperature, the pressure was decreased to 25% of its original value.
• E) None of these statements correctly explains the change.

---

Definitions:

Spongy Bone

A porous type of bone tissue found at the ends of bones and within the vertebral bones, characterized by a honeycomb-like structure.

Compact Bone

The dense, hard outer layer of bones that provides strength, structure, and resistance to the body.

Bony Plates

Bony plates are rigid structures of dense bone forming the protective external layer or armor on certain animals, such as stegosaurs and armadillos.

Lacunae

Small spaces within bone or cartilage tissue that house cells such as osteocytes in bone or chondrocytes in cartilage.