Air flows through a wet pipe at 298 K and 1 atm, and the diffusion coefficient of water vapor in air is 2.5 × 10–5 m2/s. If the heat transfer coefficient is determined to be 80 W/m2 · K. the mass transfer coefficient is
(a) 0.0022 m/s
(b) 0.036 m/s
(c) 0.074 m/s
(d) 0.092 m/s
(e) 0.13 m/s
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