Question

The SI unit for the diffusion coefficient is m2/s, but older texts sometimes report diffusion coefficients in units of in2/min. What is the value of a diffusion coefficient of 18.5 in2/min expressed in SI units

Answer 1

The value of a diffusion coefficient of 18.5 in2/min expressed in SI units is 0.000198924 m^2/s.

What is SI unit?

The International System of Units can be regarded as a body that provide a universal scientific unit to all units.

Since

$1in^2 = 1.07527*10^-5 m^2/s$

Then 18.5 in^2/min= 0.000198924 m^2/s

Therefore, the value of a diffusion coefficient of 18.5 in2/min expressed in SI units is 0.000198924 m^2/s.

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