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

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Definitions:

Maturation

The process of achieving a fully developed or final state, whether in biological, psychological, or social terms.

Elongation

The stage in DNA replication and protein synthesis where the DNA or the polypeptide chain is lengthened by the addition of new nucleotides or amino acids.

Cell Division

The process by which a parent cell divides into two or more daughter cells, critical for growth, reproduction, and repair in organisms.

Bud Scale Scars

Marks left on a twig after bud scales (which protect the bud during winter) fall off in the spring, indicating where new growth began.