ENV S 2 Study Guide - Final Guide: Karl G. Jansky Very Large Array, Louisiana Baptist University, Tral

13. The standard molarentropy of lead(II) bromide (PbBr₂) is 161 J/mol � K.What is the entropy of 2.45 g of PbBr₂?

14. CalculateDS⁰ for theformation of 1 mol of HI(g) from its elements given thefollowing information:

S⁰[H₂(g)] = 131J/mol?K

S⁰[I₂(s)] = 116J/mol?K

S⁰[HI(g)] = 206 J/mol?K.

A) 82 J/K B) 165 J/K C)247 J/K D) 329 J/K

15. For which reactionis DS_sys >0?

A)CH₄(g) + 2 O₂(g) ?CO₂(g) + 2 H₂O(l)

B)NH₃(g) + HCl(g) ?NH₄Cl(s)

C) 2NH₄NO₃(s) ? 2 N₂(g) + O₂(g) + 4H₂O(g)

D) HCl(aq) + NaOH(aq)? NaCl(aq) +H₂O(l)

16. In a biochemicalreaction, A + B C with ?G= 30 kJ/mol. Which of the followingreactions might be effectively coupled to this reaction so that itbecomes more spontaneous?

18. Which of the following statements about the elasticity of demand are likely to be true? 1) the elasticity of demand is generally larger in the long run than in the short run II) the elasticity of demand is generally larger in the short run than in the long run III) if the elasticity of demand is perfectly elastic, the buyer bears all of the burden of a tax IV) if the elasticity of demand is perfectly inelastic, the buyer bears all of the burden of a tax A) only! B) only 11 C) only III D) only IV E) I & II F) I & III G)I & IV H) II & III 1) II & IV J) III & IV K) I, II & III L) I, II & IV M) I, III & IV N) II, III & IV O) all four P) none of the four

12. Economists are often very critical of rent controls. Which of the following statements are likely to be supported by economists who do not like rent controls? I) rent controls cause the construction of lots of new rental units in the long run II) rent controls reduce the incentive for landlords to maintain their apartments III) rent controls lead to short run shortages of rental units, and hence to black markets IV) rent controls drive up the price of apartments in the short run A) only 1 B) only 11 C) only III D) only IV E) I & II F) I & III G)I & IV H) II & III 1) II & IV J) III & IV K) 1, II & III L) I, II & IV M) I, III & IV N) II, III & IV O) all four P) none of the four