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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Question
Answer number 6
![5. Calculate the heat release when 266 grams of white phosphorus P4 burns in air according to the
following equation.
P4 + 502 → P4010
AH = - 3013 kJ
6. Calculate the number of joules released when 75.0 grams of water are cooled from 100.0°C to 27.5°C.
7. Calculate the specific heat of gold if it required 48.0 joules of heat to warm 25.0 grams of
gold from 40.0°C to 55.0°C.
8. A sample of zinc, specific heat of 0.386 J/g°C, released 1,964 joules of heat when it
cooled from 92.5°C to 65.0°c. What was the mass of the zinc sample?
9. What would be the final temperature if 8.94 x 103 joules of heat were added to 454
grams of copper, specific heat 0.386 J/g°C, at 23.0°C?
10. What would be the final temperature if 8.94 x 103 joules of heat were added to 454
grams of copper, specific heat 0.386 J/g°C, at 23.0°C?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fabc0fd97-2284-49e7-909c-a0fc6ab7e6d3%2F6c922bfd-7644-469a-a1db-ad7a41a5216b%2Fa5nmpds_processed.jpeg&w=3840&q=75)
Transcribed Image Text:5. Calculate the heat release when 266 grams of white phosphorus P4 burns in air according to the
following equation.
P4 + 502 → P4010
AH = - 3013 kJ
6. Calculate the number of joules released when 75.0 grams of water are cooled from 100.0°C to 27.5°C.
7. Calculate the specific heat of gold if it required 48.0 joules of heat to warm 25.0 grams of
gold from 40.0°C to 55.0°C.
8. A sample of zinc, specific heat of 0.386 J/g°C, released 1,964 joules of heat when it
cooled from 92.5°C to 65.0°c. What was the mass of the zinc sample?
9. What would be the final temperature if 8.94 x 103 joules of heat were added to 454
grams of copper, specific heat 0.386 J/g°C, at 23.0°C?
10. What would be the final temperature if 8.94 x 103 joules of heat were added to 454
grams of copper, specific heat 0.386 J/g°C, at 23.0°C?
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