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6.45 A 455-g piece of copper tubing is heated to 89.5°C and placed in an insulated vessel containing 159 g of water at 22.8°C. Assuming no loss of water and a heat capacity of 10.0 J/K for the vessel, what is the final temperature (c of copper = 0.387 J/g•K)?

6.45 A 455-g piece of copper tubing is heated to 89.5°C and placed in an insulated vessel containing 159 g of water at 22.8°C. Assuming no loss of water and a heat capacity of 10.0 J/K for the vessel, what is the final temperature (c of copper = 0.387 J/g•K)?

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
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Of copper jewelry at 105°C has twice the mass of al another piece at 45°C. Both are placed in a calorimeter of negli- gible heat capacity. What is the final temperature inside the calo- rimeter (c of copper = 0.387 J/g•K)? rature: m tic al 6.43 When 155 mL of water at 26°C is mixed with 75 mL of water at 85°C, what is the final temperature? (Assume that no heat is released to the surroundings; d of water = 1.00 g/mL.) 11 6.44 An unknown volume of water at 18.2°C is added to 24.4 mL of water at 35.0°C. If the final temperature is 23.5°C, what was the unknown volume? (Assume that no heat is released to the sur- roundings; d of water = 1.00 g/mL.) -), or 6.45 A 455-g piece of copper tubing is heated to 89.5°C and placed in an insulated vessel containing 159 g of water at 22.8°C. Assuming no loss of water and a heat capacity of 10.0 J/K for the vessel, what is the final temperature (c of copper = place 0.387 J/g-K)? 6.46 A 30.5-g sample of an alloy at 93.0°C is placed into 50.0 g of water at 22.0°C in an insulated coffee-cup calorimeter with a heat capacity of 9.2 J/K. If the final temperature of the system is 31.1°C, what is the specific heat capacity of the alloy? 6.47 When 25.0 mL of 0.500 M H,SO, is added to 25.0 mL of 1.00 M KOH in a coffee-cup calorimeter at 23.50°C, the temperature rises to 30.17°C. Calculate AH in kJ per mole of H,O formed. (Assume that the total volume is the sum of the volumes and that the density and specific heat capacity of the solution are the same as for water.) 6.48 When 20.0 mL of 0.200 M AgNO, and 30.0 mL of 0.100 M NaCl, both at 24.72°C, are mixed in a coffee-cup calorimeter, AgCl precipitates and the temperature of the mixture increases to 25.65°C. Calculate AH in kJ per mole of AgCl(s) produced. (Assume that the total volume is the sum of the volumes and that the density and specific heat capacity of the solution are the same as for water.) eter- 6.49) When a 2.150-g sample of glucose, CH12O6, is burned in a bomb calorimeter with a heat capacity of 6.317 kJ/K, the tempera- ture of the calorimeter increases from 23.446°C to 28.745°C. Cal- eat ac- culate AE for the combustion of glucose in kJ/mol. 6.50 A chemist places 1.750 g of ethanol, C,H,O, in a bomb calo- ith o hoot canacity of 12.05 kJ/K. The sample is burned or
Transcribed Image Text:Of copper jewelry at 105°C has twice the mass of al another piece at 45°C. Both are placed in a calorimeter of negli- gible heat capacity. What is the final temperature inside the calo- rimeter (c of copper = 0.387 J/g•K)? rature: m tic al 6.43 When 155 mL of water at 26°C is mixed with 75 mL of water at 85°C, what is the final temperature? (Assume that no heat is released to the surroundings; d of water = 1.00 g/mL.) 11 6.44 An unknown volume of water at 18.2°C is added to 24.4 mL of water at 35.0°C. If the final temperature is 23.5°C, what was the unknown volume? (Assume that no heat is released to the sur- roundings; d of water = 1.00 g/mL.) -), or 6.45 A 455-g piece of copper tubing is heated to 89.5°C and placed in an insulated vessel containing 159 g of water at 22.8°C. Assuming no loss of water and a heat capacity of 10.0 J/K for the vessel, what is the final temperature (c of copper = place 0.387 J/g-K)? 6.46 A 30.5-g sample of an alloy at 93.0°C is placed into 50.0 g of water at 22.0°C in an insulated coffee-cup calorimeter with a heat capacity of 9.2 J/K. If the final temperature of the system is 31.1°C, what is the specific heat capacity of the alloy? 6.47 When 25.0 mL of 0.500 M H,SO, is added to 25.0 mL of 1.00 M KOH in a coffee-cup calorimeter at 23.50°C, the temperature rises to 30.17°C. Calculate AH in kJ per mole of H,O formed. (Assume that the total volume is the sum of the volumes and that the density and specific heat capacity of the solution are the same as for water.) 6.48 When 20.0 mL of 0.200 M AgNO, and 30.0 mL of 0.100 M NaCl, both at 24.72°C, are mixed in a coffee-cup calorimeter, AgCl precipitates and the temperature of the mixture increases to 25.65°C. Calculate AH in kJ per mole of AgCl(s) produced. (Assume that the total volume is the sum of the volumes and that the density and specific heat capacity of the solution are the same as for water.) eter- 6.49) When a 2.150-g sample of glucose, CH12O6, is burned in a bomb calorimeter with a heat capacity of 6.317 kJ/K, the tempera- ture of the calorimeter increases from 23.446°C to 28.745°C. Cal- eat ac- culate AE for the combustion of glucose in kJ/mol. 6.50 A chemist places 1.750 g of ethanol, C,H,O, in a bomb calo- ith o hoot canacity of 12.05 kJ/K. The sample is burned or
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