1. Calculate the amount of heat energy associated with 125 g of ice at 0°C turning into water at 0•C.

Chemistry
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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
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1. Calculate the amount of heat energy associated with 125 g of ice at 0°C
ENTHALPY PROBLEM SOLVING ON HEAT OF FUSION AND HEAT OF
VAPORIZATION. ( Activity
Name:
Period:
Date:
Time: 20 minutes
eonstadua
Use the general formula for
Heat of fusion(H,) (the amount of heat energu required to change the state
of a substance from a solid into a liquid.)
AND
beunm
Heat of Vaporization(H,) (the amount of heat energy required to change
the state of a substance from a liquid into a vapor or gas.
General formula= Q = m*AH; OR m*AH,
NOTE THESE:
• Heat of fusion for water = 334 J/g
• Heat of vaporization for water = 2257 J/g
• Since there is no change in the water temperature when it
freezes, melts, and condenses, temperature change is
ignored here. (Same applies: from boiling to vapo)
turning into water at 0•C.
2. Calculate the amount of heat eneray associated with 255 g of water
vapor condensing at 10 C.
Solid
3. Calculate the amount of heat energy associated with 75 g of water at
turning into water at freezing point (0°C)
Transcribed Image Text:1. Calculate the amount of heat energy associated with 125 g of ice at 0°C ENTHALPY PROBLEM SOLVING ON HEAT OF FUSION AND HEAT OF VAPORIZATION. ( Activity Name: Period: Date: Time: 20 minutes eonstadua Use the general formula for Heat of fusion(H,) (the amount of heat energu required to change the state of a substance from a solid into a liquid.) AND beunm Heat of Vaporization(H,) (the amount of heat energy required to change the state of a substance from a liquid into a vapor or gas. General formula= Q = m*AH; OR m*AH, NOTE THESE: • Heat of fusion for water = 334 J/g • Heat of vaporization for water = 2257 J/g • Since there is no change in the water temperature when it freezes, melts, and condenses, temperature change is ignored here. (Same applies: from boiling to vapo) turning into water at 0•C. 2. Calculate the amount of heat eneray associated with 255 g of water vapor condensing at 10 C. Solid 3. Calculate the amount of heat energy associated with 75 g of water at turning into water at freezing point (0°C)
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