Answer: The square root of its molar mass.
- A Its temperature as generally observed
- B The square root of its molar mass
- C Its pressure in typical laboratory settings
- D The square of its volume under usual circumstances
Correct answer: B. The square root of its molar mass
Explanation: Graham Law states rate of diffusion is inversely proportional to the square root of molar mass.
Boyle's law: at constant temperature the pressure of a fixed mass of gas is inversely proportional to its volume (P ∝ 1/V), so the P–V plot is a hyperbola — halving the volume doubles the pressure. Image: Reginaprice2013, CC BY-SA 3.0, via Wikimedia Commons.
Concept context
Discover why gases expand to fill any container while liquids flow and solids hold their shape. Master the gas laws, the ideal gas equation, and the reasons real gases deviate from ideal behavior.