The rough value of diffusion co-efficient of water vapor into air at 25°C may be about ______________ cm2/sec?
Correct answer: A. 0.25
- A. 0.25
- B. 2.5
- C. 1.25
- D. 0.0025
Explanation
The diffusivity of water vapour in air near room temperature is approximately 0.25 cm²/s. The values 2.5 and 0.0025 cm²/s are each about one order of magnitude too high or too low.
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