1) What is the specific heat of the solid phase? Express your answer to two sign
ID: 582114 • Letter: 1
Question
1)What is the specific heat of the solid phase? Express your answer to two significant figures and include the appropriate units.
2)What is the specific heat of the liquid phase? Express your answer to two significant figures and include the appropriate units.
3)What is the melting temperature? Express your answer to two significant figures and include the appropriate units.
4)What is the boiling temperature? Express your answer to two significant figures and include the appropriate units.
5)What is the heat of fusion? Express your answer to two significant figures and include the appropriate units.
6)What is the heat of vaporization? Express your answer to two significant figures and include the appropriate units.
My last problem for the day thank you!
Explanation / Answer
1)
The heat supplied, Q = m s delta T.
Specific heat in solid phase = Q/(m delta T) = 20000/(0.4*20) = 2500 J/kg.K
2)
Specific heat in liquid phase = Q/(m delta T) = (120000-40000)/(0.4*(40+20)) = 3333.33 J/kg.K
3) Melting and boiling happens at constant temperature.
melting temperature Tmp = -20 deg C
4)
boiling temperature Tbp = 40 deg C
5) Heat of fusion = 20 kJ
6) heat of vaporization = 60 kJ
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