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The formula for effective permeance (P) is given by:
[ P = frac{Q}{Delta P} ]
where:
– ( P ) is the effective permeance,
– ( Q ) is the flow rate or the amount of substance passing through a unit area,
– ( Delta P ) is the difference in pressure driving the flow.
In some contexts, especially in the study of membranes and semi-permeable barriers, effective permeance may also be represented in terms of the permeability coefficient and thickness of the material. However, the specific relationship may depend on the system being studied.
Answer: a
Explanation: The effective flux and the total mmf is first calculated. On substitution of the values the effective permeance is calculated.