Answers%20to%20HW5%20problems

Answers%20to%20HW5%20problems - 5.17 D = 8.1 x 10-15 m 2 /s...

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5.6 Use both Equations 5.1a and 5.3. M=4.1 x 10 -3 kg/h 5.7 Use Equation 5.3. x B = = 1.8 x 10 -3 m = 1.8 mm 5.11 Use Equation 5.5; erf(z)=0.75, z=0.814, D = = 5.35 x 10 -11 m 2 /s, t = 1.13 x 105 s = 31.3 h 5.13 Use Equation 5.5; Cx = 0.056 wt% N
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Unformatted text preview: 5.17 D = 8.1 x 10-15 m 2 /s 5.21 (a) Q d = 315,700 J/mol D = 3.5 x 10-4 m 2 /s (b) D= 1.1 x 10-14 m 2 /s 5.23 Qd = 2.3 R (slope) = 212,200 J/mol mol D = 2.65 x 10-4 m 2 /s 5.26 Dt = constant T = 1381 K = 1108C...
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