Understanding the definitions of heat and work - 12/11/2015...

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12/11/2015ALEKS Meaghan E. Troy ­ 12/11/2015 12:06:21 AM EST ­ Copyright © 2015 UC Regents and ALEKS Corporation­IgNsIkr7j8P3jH­lJlkJ3_AV3mFdlE932RChHPBCBs­XfHdFDBmVcIGELHPX1Bkth_vUXnc4jsYAuQSXg99Pmk…1/31.Understanding the definitions of heat and workA mixture of gaseous reactants is put into acylinder, where a chemical reaction turns theminto gaseous products. The cylinder has apiston that moves in or out, as necessary, tokeep a constant pressure on the mixture of. The cylinder is also submerged in a largeinsulated water bath. (See sketch at right.)From previous experiments, this chemicalreaction is known to releaseof energy.The position of the piston is monitored, and it is determined from this data that thepiston doesof work on the system during the reaction.The fact that you're being asked to analyze the flow ofenergybetween asystem(themixture of reactinggases) and its surroundings (the piston and water bath) tells you thatyou're dealing with a problem inthermodynamics, the study of how energy flows between1atm344.kJ364.kJMeaghan E. Troy ­ 12/11/2015 12:06:21 AM ESTGeneral Chemistry (First Semester) / CHE 131 Fall 2015 – 01­02 (Lacey)

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Term
Spring
Professor
Kerber
Tags
Chemistry, Exothermic, Endothermic, UC Regents, ALEKS Corporation, Meaghan E Troy, ALEKS Meaghan E

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