5. The heat from a candy bar's Calories can raise the temperature of a 4.50 kg bucket of water from 4°C to 68°C. How many Calories are in the candy bar? 6. A 45.2 gram sample of an unknown metal has 25,533 Joules of heat added to it. If its temperature changes from 4.00°C to 733°C, what is the metal's specific heat capacity? 7. (challenge problem) Gold has a specific heat of 0.129 J/g°C. A scientist has been given a 80.0 gram coin and has been told it is pure gold. When she adds 412.8 J of heat to the coin, its temperature rises from 72°F to 144°F. Is the coin actually made of gold?

5. The heat from a candy bar's Calories can raise the temperature of a 4.50 kg bucket of water from 4°C to 68°C. How many Calories are in the candy bar? 6. A 45.2 gram sample of an unknown metal has 25,533 Joules of heat added to it. If its temperature changes from 4.00°C to 733°C, what is the metal's specific heat capacity? 7. (challenge problem) Gold has a specific heat of 0.129 J/g°C. A scientist has been given a 80.0 gram coin and has been told it is pure gold. When she adds 412.8 J of heat to the coin, its temperature rises from 72°F to 144°F. Is the coin actually made of gold?

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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5. The heat from a candy bar's Calories can raise the temperature of a 4.50 kg bucket of water from 4°C
to 68°C. How many Calories are in the candy bar?
6. A 45.2 gram sample of an unknown metal has 25,533 Joules of heat added to it. If its temperature
changes from 4.00°C to 733°C, what is the metal's specific heat capacity?
7. (challenge problem) Gold has a specific heat of 0.129 J/g°C. A scientist has been given a 80.0
and has been told it is pure gold. When she adds 412.8 J of heat to the coin, its temperature
gram
rises from 72°F to 144°F. Is the coin actually made of gold?
lili

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