The diffusion constant for oxygen diffusing through tissue is 1.0 × 10⁻¹¹ m²/s. In a certain sample oxygen diffuses through the tissue at a rate of 2.0 × 10⁻⁶ kg/s. If the thickness of the tissue is doubled, then what is the rate of oxygen flow through the tissue? A) 1.5 × 10⁻⁶ kg/s B) 1.2 × 10⁻⁶ kg/s C) 1.0 × 10⁻⁶ kg/s D) 0.6 × 10⁻⁶ kg/s E) 0.4 × 10⁻⁶ kg/s

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Quizplus · Accepted Answer

The rate of diffusion through a medium is inversely proportional to the thickness of the medium. Therefore, if the thickness is doubled, the rate of diffusion is halved. The original rate is 2.0 × 10^-6 kg/s, so halving this rate gives 1.0 × 10^-6 kg/s.

The Diffusion Constant for Oxygen Diffusing Through Tissue Is 1