Suppose that 120 g of water and 150 g of ethanol, which are at 5 °C and in different containers, are heated in the same heat source that supplies 8 kJ/min, until the alcohol reaches 25 °C. (Consider: specific heat of water is 1 cal/g °C and of ethanol is 0.6 cal/g °C). Answer: a) How long and at what temperature will the water reach until there is the same amount of heat that the system containing ethanol absorbed when it reached 25 °C? b) If the two systems are heated during the same period, theoretically which liquid should indicate a higher temperature? Explain in detail. c) Explain how interaction forces influence the thermal capacity and specific heat of materials.
Suppose that 120 g of water and 150 g of ethanol, which are at 5 °C and in different containers, are heated in the same heat source that supplies 8 kJ/min, until the alcohol reaches 25 °C. (Consider: specific heat of water is 1 cal/g °C and of ethanol is 0.6 cal/g °C). Answer: a) How long and at what temperature will the water reach until there is the same amount of heat that the system containing ethanol absorbed when it reached 25 °C? b) If the two systems are heated during the same period, theoretically which liquid should indicate a higher temperature? Explain in detail. c) Explain how interaction forces influence the thermal capacity and specific heat of materials.
Chapter10: Energy
Section: Chapter Questions
Problem 65A
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Question
Suppose that 120 g of water and 150 g of ethanol, which are at 5 °C and in different containers, are heated in the same heat source that supplies 8 kJ/min, until the alcohol reaches 25 °C. (Consider: specific heat of water is 1 cal/g °C and of ethanol is 0.6 cal/g °C).
Answer:
a) How long and at what temperature will the water reach until there is the same amount of heat that the system containing ethanol absorbed when it reached 25 °C?
b) If the two systems are heated during the same period, theoretically which liquid should indicate a higher temperature? Explain in detail.
c) Explain how interaction forces influence the thermal capacity and specific heat of materials.
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