The Mean Free Path of a Molecule Is 2

question 25

Multiple Choice

The mean free path of a molecule is 2.25 × 10^-7 m in an ideal gas at standard temperature and pressure (0°C and 1 atm) . What is the mean free path if the pressure of the gas is doubled but the temperature is constant?

• A) 0.75 × 10^-7 m
• B) 1.13 × 10^-7 m
• C) 2.25 × 10^-7 m
• D) 3.38 × 10^-7 m
• E) 3.75 × 10^-7 m

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Definitions:

pH

A scale used to specify the acidity or basicity of an aqueous solution, with lower values being more acidic and higher values more basic.

Sphincters

Circular muscles that control the passage of substances through the openings of the body.

Dentin

A calcified tissue that lies beneath the enamel and cementum of teeth, providing structure and sheltering the pulp.

Enamel

The hard, outermost layer of a tooth that protects it from decay.