Which of the following is/are a reason that water is a desirable heat sink for use in calorimeters? I) Water's heat specific capacity is very pre- cisely known. II) Water is readily available. III) Water has an unusually large specific heat capacity. 1. I only 2. II and III 3. I and II 4. I, II and III 5. II only 6. I and III 7 III only

Which of the following is/are a reason that water is a desirable heat sink for use in calorimeters? I) Water's heat specific capacity is very pre- cisely known. II) Water is readily available. III) Water has an unusually large specific heat capacity. 1. I only 2. II and III 3. I and II 4. I, II and III 5. II only 6. I and III 7 III only

Chemistry for Engineering Students

4th Edition

ISBN:9781337398909

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter10: Entropy And The Second Law Of Thermodynamics

Section: Chapter Questions

Problem 10.86PAE: The enthalpy of vaporization for water is 40.65 kJ mol-1. As a design engineer for a project in a...

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A mixture of gaseous reactants is put in to a cylinder, where a chemical reaction turns them in to 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 cylinder is also submerged in a large insulated water bath. From previous experiments, this chemical reaction is known to release 211. kJ of energy. The temperature of the water bath is monitored, and it is determined from this data that 360. kJ of heat flows out of the system during the reaction. A) is the reaction exothermic or endothermic? B) Does the temperature of the water go up or down? C) does the piston move in, out, or neither? D)does The gas mixture do work, Or is work done on it? E)how much work is done on (or by) the gas mixture?
A mixture of gaseous reactants is put in to a cylinder, where a chemical reaction turns them in to 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 cylinder is also submerged in a large insulated water bath. From previous experiments, this chemical reaction is known to release 211. kJ of energy. The temperature of the water bath is monitored, and it is determined from this data that 360. kJ of heat flows out of the system during the reaction. A) is the reaction exothermic or endothermic? B) Does the temperature of the water go up or down? C) does the piston move in, out, or neither?