CHEM 1050 Study Guide - Final Guide: Calorimeter, Ammonium Nitrate, Sulfur Dioxide
9 Dec 2018
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40 points in total for the multiple choice section. For each question, circle the letter of the one correct answer and enter the answer on the test scoring answer sheet in pencil. The test scoring answer sheet will be considered nal no matter what you marked on the examination paper. Page 2 version 1 - red scoring answer sheet: the molar enthalpy of combustion of liquid ethanol (c2h5oh ((cid:77))) is -1370 kj mol-1. The molar enthalpy of solution of ammonium nitrate is: (a) +28. 0 kj mol-1 (b) -28. 0 kj mol-1 (c) +0. 35 kj mol-1 (d) +15. 7 kj mol-1 (e) -15. 7 kj mol-1. Hence, energy must go into the molecular system. At the same time the system was found to have 1. 25 kj of work done on it. What is u for this reaction? (a) -5. 50 kj (b) +5. 50 kj (c) -6. 75 kj (d) -4. 25 kj (e) +6. 75 kj.
