3) A block of copper of unknown mass has an initial temperature of 65.4 °C. The copper is immersed in a beaker containing 95.7 g of water at 22.7 °C. When the two substances reach thermal equilibrium, the final temperature is 24.2 °C. What is the mass of the copper block? Cs for Copper = 0.385 J/g.C Cs for H20 = 4.184 J/g.C q H2O = 600.6 J q Cu = -600.6 J
3) A block of copper of unknown mass has an initial temperature of 65.4 °C. The copper is immersed in a beaker containing 95.7 g of water at 22.7 °C. When the two substances reach thermal equilibrium, the final temperature is 24.2 °C. What is the mass of the copper block? Cs for Copper = 0.385 J/g.C Cs for H20 = 4.184 J/g.C q H2O = 600.6 J q Cu = -600.6 J
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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Transcribed Image Text:3) A block of copper of unknown mass has an initial temperature of 65.4 °C. The copper is immersed in a
beaker containing 95.7 g of water at 22.7 °C. When the two substances reach thermal equilibrium, the final
temperature is 24.2 °C. What is the mass of the copper block?
Cs for Copper = 0.385 J/g.C
Cs for H20 = 4.184 J/g.C
q H2O = 600.6 J
q Cu = -600.6 J
4) Which of the following (with specific heat capacity provided) would show the smallest temperature
change upon gaining 200.0 J of heat? Explain your answer based on the specific heat capacity value.
Specific Heat (J/g°C)
0.903 J/g°C
0.385 J/g°C
0.79 J/g°C
0.128 J/g°C
0.235 J/g°C
Substance
Amount in Grams
50.0 g
50.0 g
25.0 g
25.0 g
Al
Cu
Granite
Au
Ag
25.0 g
5) A 70.0-g piece of metal at 80.0 °C is placed in 100 g of water at 22.0 °C contained in a calorimeter. The
metal and water come to the same temperature at 24.6 °C. How much heat did the metal give up to the
water? What is the specific heat of the metal?
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