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...
Related questions
Question
Which pack had the greatest change in enthalpy? How do you know?
Transcribed Image Text:150
70.1
180
74.9
210
78.8
240
80.9
270
82.1
300
82.6
330
83.5
360
84.7
390
86.3
420
85.5
450
85.4
Transcribed Image Text:Table 4: Cold Pack Data
Time (sec)
Temperature (°C)
Initial
25
30
60
-0.1
90
-1.1
120
-1.5
150
-1.6
180
-1.1
210
-0.4
240
-0.2
270
0.2
300
1.2
330
1.5
360
2.2
390
3.5
420
4.5
450
5
Table 5: Hand Warmer Data
Time (sec)
Temperature (°C)
26.4
Initial
30
43.6
60
52.4
90
57.4
120
61.1
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