The molar diffusion flux for a spherical shell with inner radius r1 a – McqOptions

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1.	The molar diffusion flux for a spherical shell with inner radius r1 and outer radius r2 is directly proportional to
A.	4r1r2/r2-r1
B.	r2-r1/4r1r2
C.	r1r2/r2-r1
D.	2r1r2/r2-r1
Answer» B. r2-r1/4r1r2

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