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A Certain Membrane Has a Diffusion Constant D = 1 ×\times

Question 69

Multiple Choice

A certain membrane has a diffusion constant D = 1.00 ×\times 10-11 m2/s and a thickness of 1.00 ×\times 10-6 m.The area of the membrane is 5.00 m2.If the difference in the concentration across the membrane is 2.44 atoms/m3,then the rate of particles diffusing through the membrane is


A) 1.05 ×\times 1021 s-1.
B) 1.22 ×\times 1021 s-1.
C) 2.03 ×\times 1021 s-1.
D) 2.83 ×\times 1021 s-1.
E) 3.27 ×\times 1021 s-1.

Correct Answer:

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