Chem 141 2009_Prob Set 6

Chem 141 2009_Prob Set 6 - temperature of the water to body...

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CHEM 141: Problem Set 6 (60 pts) Due by noon Wednesday, Nov 4, 2009 1) (8 pts) a) For the highest thermal efficiency, a refrigerator freezer compartment should be fully packed with food. What is the thermochemical basis for this recommendation? b) Consider thermos flasks containing equal masses of tea, coffee, or chicken noodle soup. The flasks containing tea and coffee stay hotter considerably longer than that containing chicken soup, even if they all start at the same temperature. Provide a thermochemical explanation for this observation. 2) (12 pts) a) If a person drinks four 250 mL glasses of cold (3.0 ° C) water each day, how much body heat per day must be supplied to raise the
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Unformatted text preview: temperature of the water to body temperature (37 C)? b) How much heat would your body lose if you ate 800. g of snow at 0 C to quench thirst? 3) (6 pts) Gilbert, Kirss, Foster, and Davies, chapter 5, exercise 5.54, pg. 232. Explain how you arrived at your conclusion. 4) (8 pts) Gilbert, Kirss, Foster, and Davies, chapter 5, exercise 5.118, pg. 236. 5) (6 pts) Gilbert, Kirss, Foster, and Davies, chapter 5, exercise 5.22, pg. 231. Provide a brief justification for each answer. 6) (10 pts) Gilbert, Kirss, Foster, and Davies, chapter 5, exercise 5.74, pg. 233. 7) (10 pts) Gilbert, Kirss, Foster, and Davies, chapter 5, exercise 5.94, pg. 234....
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This note was uploaded on 01/20/2011 for the course CHEM 141 taught by Professor Westmoreland during the Fall '09 term at Wesleyan.

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