12,300 J/mol CH=30.8VPH, exp RT DH(m²/s) 4.76 x 10-7 exp | 39,560 J/mol RT Ap Ax Ap σ r₁Ap σ σ || r₁Ap Nr, Ap t = (4.0)(50 x 103 m)(2.027 MPa 0.057 MPa) = 197 MPa (2 × 10-3 m) V = AL = (-A)L V = r² = r²)L = [(1 + 1)² = r²]L = (+2r+AL =(2 + 1²)L Cost= Vp 1000 Cost (steel) = = [(628 cm³)(7,8 g/cm³)] n³)](1.75 $US/kg) = $8.60 (1000 g/kg) 2