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141 Exam 2 Fa12 Key Essay

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 Exam 2

Part I: Multiple Choice (2 points each)
Directions: Please circle the best answer for each of the following questions.

Question 1. The principle quantum numbers have the designation a) H, He, Li…
b) 1, 2, 3…
c) k, m, s…
d) s, p, d…
e) α, β, γ…
f) all contain the same mass

Question 2. Which of the following is true if ∆Esystem = -95 J? a) Both the system and the surroundings are losing 95 J.
b) The system is gaining 95 J, while the surroundings are losing 95 J. c) The system is losing 95 J, while the surrounds are gaining 95 J. d) Both the system and the surroundings are gaining 95 J.

e) none of the above

Question 3. Identify what a bomb calorimeter measures.
a) measures ∆E for combustion reactions
b) measures ∆H for oxidation solutions
c) measures ∆T for hydrolysis solutions
d) measures ∆H for aqueous solutions
e) measures ∆E for reduction solutions

Question 4. Which of the following statements is true?
a) State functions do not depend on the path taken to arrive at a particular state. b) ∆Hrxn can be determined using constant pressure calorimetry. c) ∆Erxn can be determined using constant volume calorimetry. d) Energy is neither created nor destroyed, excluding nuclear reactions. e) all of the above

Question 5. ______ gas particle travels the fastest.
a) Ne
b) O2
c) CO
d) H2
e) N2
Question 6. Given three cylinders containing oxygen gas at the same volume and pressure: cylinder A i...

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