Basic Principles and Calculations in Chemical Engineering

Appendix E. Answers to Selected Problems

Chapter 2

2.1.1. (b) 4; (c) 1; (g) 1

2.2.1. (a) 4.17 × 10⁹ m³; (b) 449 gal/min

2.2.3. (a) 88 ft/sec; (b) 3.52 × 104 kg/m²; (c) 4.79 nm/sec²

2.2.6. 2 h

2.2.9. 1.49 × 10⁴ kJ/(day)(m²)(°C/cm)

2.2.12. The object has a mass of 21.3 kg, and the force to support this mass corresponds to the weight.

2.3.3. No. The g should be g_c.

2.3.6. u′ = 2.57k(τ′/e′)

2.3.7. 0.943 has no associated units.

2.4.1. Two

2.4.4. 569.8 cm²

2.6.3. C₁₂O₁₁H₂₂

2.7.1. (a) 100 or 1 g mol (use SI units); (d) use 1 or 100 mol (SI or AE)

2.7.3. 134.2 lb Cl or 1 day (10.7 × 10⁶ gal water)

2.8.2. 152 ft³

2.9.1. Na: 0.22; Cl: 0.33; O: 0.45

2.9.3. CO₂: 0.56; N₂: 0.44 (mole fraction)

2.9.12. Mass fraction H₂S = 2.7 × 10^–4

2.10.1. 474°R, 264 K, ...