A 30-L Sample of Helium Was Placed in Container Fitted with with a Porous

question 1

Multiple Choice

A 3.0-L sample of helium was placed in container fitted with a porous membrane. Half of the helium effused through the membrane in 24 hours. A 3.0-L sample of oxygen was placed in an identical container. How many hours will it take for half of the oxygen to effuse through the membrane?

• A) 8.5 h
• B) 12 h
• C) 48 h
• D) 60. h
• E) 68 h

---

Definitions:

American Intelligence Tests

Standardized examinations used in the United States to assess an individual's intellectual abilities and cognitive skills.

Emotion

Emotion is a complex psychological state involving an individual's subjective experience, physiological responses, and behavioral or expressive patterns triggered by stimuli perceived as personally significant.

Cognition

The mental action or process of acquiring knowledge and understanding through thought, experience, and the senses.

Gardner's Multiple Intelligences

Gardner's Multiple Intelligences theory proposes that intelligence is not a single general ability, but rather is composed of various distinct types of cognitive capabilities.