Gaseous diffusivity at atmospheric pressure is of the order of _____________________ cm2/second?
Correct answer: A. 1
- A. 1
- B. 1 to 5
- C. 5 to 10
- D. > 10
Explanation
Gas diffusivities at about atmospheric pressure are typically of the order of 1 cm²/s, much larger than liquid diffusivities. Since diffusivity decreases as pressure increases, this order applies specifically near atmospheric pressure.
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