only 45 Of copper jewelry at 105°C has twice the mass ofalanother 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:mtical6.43 When 155 mL of water at 26°C is mixed with 75 mL of waterat 85°C, what is the final temperature? (Assume that no heat isreleased to the surroundings; d of water = 1.00 g/mL.)116.44 An unknown volume of water at 18.2°C is added to 24.4 mLof water at 35.0°C. If the final temperature is 23.5°C, what was theunknown volume? (Assume that no heat is released to the sur-roundings; d of water = 1.00 g/mL.)-), or6.45 A 455-g piece of copper tubing is heated to 89.5°C andplaced 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 thevessel, what is the final temperature (c of copper =place0.387 J/g-K)?6.46 A 30.5-g sample of an alloy at 93.0°C is placed into 50.0 g ofwater at 22.0°C in an insulated coffee-cup calorimeter with a heatcapacity of 9.2 J/K. If the final temperature of the system is31.1°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 MKOH in a coffee-cup calorimeter at 23.50°C, the temperature rises to30.17°C. Calculate AH in kJ per mole of H,O formed. (Assume thatthe total volume is the sum of the volumes and that the density andspecific 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 MNaCl, both at 24.72°C, are mixed in a coffee-cup calorimeter, AgClprecipitates and the temperature of the mixture increases to 25.65°C.Calculate AH in kJ per mole of AgCl(s) produced. (Assume that thetotal volume is the sum of the volumes and that the density andspecific 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 abomb 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-eatac-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 burnedor

Given mass of copper = 455 g Initial temperature of copper = 89.5°C mass of water = 159 g Initial…

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

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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