The quantity of heat Q that changes the temperature ΔT of a mass m of a substance is given by Q=c⋅m⋅ΔT, where c is the specific heat capacity of the substance. For example, for H2O, c=1 cal/(g⋅°C). And for a change of phase, the quantity of heat Q that changes the phase of a mass m is Q=mL, where L is the heat of fusion or heat of vaporization of the substance. For example, for H2O, the heat of fusion is 80 cal/g (or 80 kcal/kg) and the heat of vaporization is 540 cal/g (or 540 kcal/kg). Use these relationships to determine the number of calories to change 0.60 kg of 0°C ice to 0.60 kg of 100 °C steam.
The quantity of heat Q that changes the temperature ΔT of a mass m of a substance is given by Q=c⋅m⋅ΔT, where c is the specific heat capacity of the substance. For example, for H2O, c=1 cal/(g⋅°C). And for a change of phase, the quantity of heat Q that changes the phase of a mass m is Q=mL, where L is the heat of fusion or heat of vaporization of the substance. For example, for H2O, the heat of fusion is 80 cal/g (or 80 kcal/kg) and the heat of vaporization is 540 cal/g (or 540 kcal/kg). Use these relationships to determine the number of calories to change 0.60 kg of 0°C ice to 0.60 kg of 100 °C steam.
Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter21: Heat And The First Law Of Thermodynamics
Section: Chapter Questions
Problem 71PQ
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The quantity of heat Q that changes the temperature ΔT of a mass m of a substance is given by Q=c⋅m⋅ΔT, where c is the specific heat capacity of the substance.
For example, for H2O, c=1 cal/(g⋅°C). And for a change of phase, the quantity of heat Q that changes the phase of a mass m is Q=mL, where L is the heat of fusion or heat of vaporization of the substance. For example, for H2O, the heat of fusion is 80 cal/g (or 80 kcal/kg) and the heat of vaporization is 540 cal/g (or 540 kcal/kg).
Use these relationships to determine the number of calories to change 0.60 kg of 0°C ice to 0.60 kg of 100 °C steam.
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