CHEM 1422 : CH1422 SP17 Exam 3
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Encode your answers on the scantron sheet with soft pencil. At the end of the exam, hand in the entire exam paper and the scantron sheet to the proctor. Encode 1 under grade or education on the scantr on sheet. A 2. 500-g sample of diethylether, c4h10o(l), underwent a complete combustion in a bomb calorimeter with a total heat capacity of 15. 67 kj/k. The temperature of the calorimeter increases from 15. 23 c to 21. 09 c. What is the heat of combustion per 1 mole of c4h10o(l): -1370 kj, -2720 kj, -2790 kj, -2810 kj, -5070 kj. Ethanol undergoes combustion according to the reaction equation: C2h5oh(l) + 3 o2(g) 2 co2(g) + 3 h2o(l) Graphite and buckyballs are two of several allotropic forms of carbon. When graphite is burned to yield co2, 394 kj of heat energy is released per mole of c atoms burned.
