test - 1a

# test - 1a - 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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Introduction to Environmental Engineering (CE 3501) EXAM 1 2/18/10 Name PART A: SHORT ANSWER, 4 points each 1. 1 Mg is the same as a. 1000 g b. 1000 kg c. 1000 mg d. 0.001 kg e. 0.001 g 2. What are the correct units for k in a second-order reaction? a. 1/time b. time c. mass/volume-time d. volume/mass-time e. volume/mass 3. How many electrons are required to balance the following half reaction? HS - + 4H 2 O SO 4 2- + 9H + a. 9 electrons on the RHS of the equation (side of SO 4 2- ) b. 8 electrons on the RHS of the equation c. 9 electrons on the LHS of the equation (side of HS - ) d. 8 electrons on the LHS of the equation e. 10 electrons on the LHS of the equation 4. How many kg of O 2 are there in a 150-L tank at 25°C and 1 atm? a. 0.20
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test - 1a - Useful values Lv for water = 2257 kJ/kg...

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