Measurements show that the energy of a mixture of gaseous reactants decreases by 284. 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 -54. KJ of work is done on the mixture during the reaction. Calculate the change in enthalpy of the gas mixture during the reaction. Be sure your answer has the correct number of significant digits. Is the reaction exothermic or endothermic? exothermic endothermic 3 ?

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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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Measurements show that the energy of a mixture of gaseous reactants
decreases by 284. 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 -54. kJ of work is done on the
mixture during the reaction.
Calculate the change in enthalpy of the gas
mixture during the reaction. Be sure your answer
has the correct number of significant digits.
Is the reaction exothermic or endothermic?
exothermic
endothermic
X
?
olo
Transcribed Image Text:Measurements show that the energy of a mixture of gaseous reactants decreases by 284. 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 -54. kJ of work is done on the mixture during the reaction. Calculate the change in enthalpy of the gas mixture during the reaction. Be sure your answer has the correct number of significant digits. Is the reaction exothermic or endothermic? exothermic endothermic X ? olo
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