Igcse Model Questions Vol1 2019 Biology Question 5
Practice objective / multiple choice question 5 from the 2019 Igcse Model Questions Vol1 Biology examination.
Diffusion of a solute across a thin membrane follows Fick's first law: \(J = \dfrac{D A}{\Delta x}\,\Delta C\). Given a diffusion coefficient \(D = 1.2 \times 10^{-5}\ \text{cm}^2\text{s}^{-1}\), membrane area \(A = 2.5\ \text{cm}^2\), membrane thickness \(\Delta x = 0.01\ \text{cm}\), and a concentration difference \(\Delta C = 0.04\ \text{mol\,cm}^{-3}\), calculate the rate of diffusion \(J\) in mol s\(^{-1}\). Express your answer in scientific notation to two significant figures.
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This is Igcse Model Questions Vol1 2019 Biology Question 5. It is one of the objective questions from the 2019 Igcse Model Questions Vol1 Biology examination.
Difficulty level: Medium .
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