A Lower Tank Contains Water While an Upper Tank Contains

question 23

Multiple Choice

A lower tank contains water while an upper tank contains air with a negligible concentration of water vapor.A tube with a circular cross section and radius 0.050 m is inserted between the two tanks.The length of the tube is 0.25 m.The diffusion coefficient of water vapor through air is 2.4 × 10^-⁵ m²/s.The concentration of water vapor just above the surface of the water is 1.7 × 10^-² kg/m³.If the water vapor is removed from the upper tank so that the concentration there remains nearly zero,what mass of water vapor diffuses through the tube each hour?

• A)4.6 × 10^-⁵ kg
• B)2.0 × 10^-⁶ kg
• C)7.1 × 10^-⁷ kg
• D)1.3 × 10^-⁸ kg
• E)8.2 × 10^-⁸ kg

---

Definitions:

Sex-Stereotyping

Assigning behaviors, roles, or attributes to individuals based on their gender, often in a limiting or prejudicial manner.

Competence

Competence denotes the ability of an individual to effectively perform or achieve a specific task or skill.

Visual Media

Forms of media that communicate information primarily through visual representation, including television, films, and the internet.

Face-Ism

Media depiction that gives greater prominence to the head and less prominence to the body for men, but vice versa for women.