test - 1d

# test - 1d - Useful values Lv for water = 2257 kJ/kg...

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Useful values L v for water = 2257 kJ/kg Molecular weights: O (16 g/mol), H (1 g/mol), C (12 g/mol), N (14 g/mol) R = 0.082056 L-atm/K-mol density of propane = 0.508 g/mL density of gasoline = 0.789 g/mL Standard enthalpies of C 3 H 8(l) (propane): -119.8 kJ/mol C 8 H 18(l) (gasoline): -120.3 kJ/mol H 2 O (g) : -241.8 kJ/mol H 2 O (l) : -285.8 kJ/mol CO 2(g) : -393.5 kJ/mol Useful conversion factors: 2.2 lb/kg 3.785 L/gal 1.055 kJ/Btu 1000 L/m 3 Quadratic equation ax 2 + bx + c = 0

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YELLOW Introduction to Environmental Engineering (CE 3501) EXAM 1 2/18/10 Name PART A: SHORT ANSWER, 4 points each 1. Which of the following represents an energy balance equation for a substance with mass “M” that is burned, releasing energy and in which the energy is lost in water evaporation, and the heating of one solid and one gas held at atmospheric pressure? a. MH rxn - m w L v + m s CΔT + m g C P ΔT = 0 b. MH rxn = m w CΔT + m s CΔT + m g C P ΔT c. MCH rxn = m w L v + m s CΔT + m g C p ΔT d. MH rxn - m w L v - m s CΔT - m g C p ΔT = 0 e. MH rxn - m w L v - m s CΔT - m g C v ΔT = 0 2. In Dr. Marshall’s talk, the “β factor” was based on a. The country’s location b. The country’s population c. The country’s income level d. The country’s energy efficiency/use e. None of the above 3. Which equation defines logistic growth? a.
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test - 1d - Useful values Lv for water = 2257 kJ/kg...

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