Measurements show that the enthalpy of a mixture of gaseous reactants decreases by 253. kJ during a certain chemical reaction, which is carried out at aconstant pressure. Furthermore, by carefully monitoring the volume change it is determined that 149. kJ of work is done on the mixture during the reaction.Calculate the change in energy of the gas mixtureduring the reaction. Round your answer to 3|kJх10significant digits.exothermicIs the reaction exothermic or endothermic?endothermic

∆E = q +W ∆E = -253 + 149 ∆E = -104J The first law of thermodynamics states that the change in…

Answered: id your answer to 3 exothermic cor…

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id your answer to 3 exothermic cor endothermic? endothermic

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter4: Energy And Chemical Reactions

Section: Chapter Questions

Problem 65QRT

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Question

Measurements show that the enthalpy of a mixture of gaseous reactants decreases by 253. kJ during a certain chemical reaction, which is carried out at a
constant pressure. Furthermore, by carefully monitoring the volume change it is determined that 149. kJ of work is done on the mixture during the reaction.
Calculate the change in energy of the gas mixture
during the reaction. Round your answer to 3
|kJ
х10
significant digits.
exothermic
Is the reaction exothermic or endothermic?
endothermic

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