The Molar Mass of an Unknown Gas Was Measured by an Effusion

question 15

Multiple Choice

The molar mass of an unknown gas was measured by an effusion experiment.It was found that the unknown gas effused at a rate of 2.2 × 10⁻⁶ mol/hr,whereas the nitrogen gas effused at a rate of 3.1 × 10⁻⁶ mol/hr.The molar mass of the gas is _____.

• A) 24 g/mol
• B) 40 g/mol
• C) 14 g/mol
• D) 33 g/mol
• E) 56 g/mol

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Definitions:

Goal-Directed Behavior

Behavior that is oriented towards achieving a specific objective, showcasing the ability to identify, plan, and execute actions that lead to the attainment of a goal.

Substage

A division within a larger stage or phase, often used to categorize specific periods or steps in a process or development.

Primary Circular Reactions

Repetitive actions in infants, centered on their own bodies, that serve as a foundational aspect of their cognitive development.

Secondary Circular Reactions

A stage in Piaget’s theory of cognitive development where infants repeat actions that affect their environment, leading to learning about the world.