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

question 68

Multiple Choice

A 3.0-L sample of helium was placed in a 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

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Physical Injury

Harm or damage to the body resulting from an external force, potentially causing pain, disability or death.

Trespasser

A person who enters someone else's property without permission or lawful excuse.

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Boisterous, physical play involving minor scuffles and wrestling, usually not intended to cause serious harm.

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Real estate or possession owned by individuals or entities located adjacent to or near one's property.