Time the hand warmer increased the temperature to an

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Statistics for Management and Economics + XLSTAT Bind-in
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Chapter 3 / Exercise 3.71
Statistics for Management and Economics + XLSTAT Bind-in
Keller
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time. The hand warmer increased the temperature to an extent until it reached the maximum, and started to decrease as time went on. 0 50 100 150 200 250 300 350 0 5 10 15 20 25 30 35 40 45 50 Time (Sec) Temperature C)
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Statistics for Management and Economics + XLSTAT Bind-in
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Chapter 3 / Exercise 3.71
Statistics for Management and Economics + XLSTAT Bind-in
Keller
Expert Verified
Insert Name Enthalpy and Specific Heat Page 8 of 8 8. Putting it all together! Consider the temperature changes experienced by the cold pack and the hand warmer and answer the questions below. a. What was the overall ΔT (change in temperature) for the cold pack? Show your work and include units.
b. What was the overall ΔT (change in temperature) for the hot pack? Show your work and include units.
c. Which one worked via an endothermic process? Via an exothermic process? Explain.
d. Which pack had the greatest change in enthalpy? Explain how you know using your experimental data.

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