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A mixture of gaseous reactants is put into a cylinder, where a chemical reaction turns them into gaseous products. The cylinder has a piston that moves in or out, as necessary, to keep a constant pressure on the mixture of 1 atm. The 1 atm pressure piston cylinder is also submerged in a large insulated water bath. (See sketch at right.) cylinder From previous experiments, this chemical reaction is known to release 349. kJ of energy. water bath gases The temperature of the water bath is monitored, and it is determined from this data that 142. kJ of heat flows into the system during the reaction. exothermic Is the reaction exothermic or endothermic? x10 endothermic up Does the temperature of the water bath go up or down? down neither in Does the piston move in or out? out neither does work Does the gas mixture do work, or is work done on it? work is done on it neither How much work is done on (or by) the gas mixture? Be sure your answer has the correct number of significant digits. |kJ A chemist carefully measures the amount of heat needed to raise the temperature of a 160.0 mg sample of C,H,Cl, from -2.8 °C to 15.1 °C. The experiment shows that 3.40 J of heat are needed. What can the chemist report for the molar heat capacity of C,H,Cl,? Be sure your answer has the correct number of significant digits. -1 J• mol •K x10

A mixture of gaseous reactants is put into a cylinder, where a chemical reaction turns them into gaseous products. The cylinder has a piston that moves in or out, as necessary, to keep a constant pressure on the mixture of 1 atm. The 1 atm pressure piston cylinder is also submerged in a large insulated water bath. (See sketch at right.) cylinder From previous experiments, this chemical reaction is known to release 349. kJ of energy. water bath gases The temperature of the water bath is monitored, and it is determined from this data that 142. kJ of heat flows into the system during the reaction. exothermic Is the reaction exothermic or endothermic? x10 endothermic up Does the temperature of the water bath go up or down? down neither in Does the piston move in or out? out neither does work Does the gas mixture do work, or is work done on it? work is done on it neither How much work is done on (or by) the gas mixture? Be sure your answer has the correct number of significant digits. |kJ A chemist carefully measures the amount of heat needed to raise the temperature of a 160.0 mg sample of C,H,Cl, from -2.8 °C to 15.1 °C. The experiment shows that 3.40 J of heat are needed. What can the chemist report for the molar heat capacity of C,H,Cl,? Be sure your answer has the correct number of significant digits. -1 J• mol •K x10

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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A mixture of gaseous reactants is put into a cylinder, where a chemical reaction turns them into gaseous products. The cylinder has a piston that moves in or out, as necessary, to keep a constant pressure on the mixture of 1 atm. The 1 atm pressure piston cylinder is also submerged in a large insulated water bath. (See sketch at right.) cylinder From previous experiments, this chemical reaction is known to release 349. kJ of energy. water bath gases The temperature of the water bath is monitored, and it is determined from this data that 142. kJ of heat flows into the system during the reaction. exothermic Is the reaction exothermic or endothermic? x10 endothermic up Does the temperature of the water bath go up or down? down neither in Does the piston move in or out? out neither does work Does the gas mixture do work, or is work done on it? work is done on it neither How much work is done on (or by) the gas mixture? Be sure your answer has the correct number of significant digits. |kJ
Transcribed Image Text:A mixture of gaseous reactants is put into a cylinder, where a chemical reaction turns them into gaseous products. The cylinder has a piston that moves in or out, as necessary, to keep a constant pressure on the mixture of 1 atm. The 1 atm pressure piston cylinder is also submerged in a large insulated water bath. (See sketch at right.) cylinder From previous experiments, this chemical reaction is known to release 349. kJ of energy. water bath gases The temperature of the water bath is monitored, and it is determined from this data that 142. kJ of heat flows into the system during the reaction. exothermic Is the reaction exothermic or endothermic? x10 endothermic up Does the temperature of the water bath go up or down? down neither in Does the piston move in or out? out neither does work Does the gas mixture do work, or is work done on it? work is done on it neither How much work is done on (or by) the gas mixture? Be sure your answer has the correct number of significant digits. |kJ
A chemist carefully measures the amount of heat needed to raise the temperature of a 160.0 mg sample of C,H,Cl, from -2.8 °C to 15.1 °C. The experiment shows that 3.40 J of heat are needed. What can the chemist report for the molar heat capacity of C,H,Cl,? Be sure your answer has the correct number of significant digits. -1 J• mol •K x10
Transcribed Image Text:A chemist carefully measures the amount of heat needed to raise the temperature of a 160.0 mg sample of C,H,Cl, from -2.8 °C to 15.1 °C. The experiment shows that 3.40 J of heat are needed. What can the chemist report for the molar heat capacity of C,H,Cl,? Be sure your answer has the correct number of significant digits. -1 J• mol •K x10
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