Heat and Phase Change. What affects heat transfer?. The material: conductor or insulator? Area. Ex: a bigger window vs. a smaller one. Thickness. Ex: heat escapes a thinner styrofoam cup than a thicker one. Heat and State of Matter.
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Given info about ice: that would be required to completely melt 50.0 grams of ice? The specific heat capacity of liquid water is 4.18
m = 50.0 gΔHfusion = 333 J/g
Given info about water:
C = 4.18 J/g°CTinitial = 26.5°C Tfinal = 0.0°CΔT = -26.5°C (Tfinal - Tinitial )
The energy gained by the ice is equal to the energy lost from the water.
Qice = -Qliquidwater
Qice = mΔHfusion = (50.0 g)(333 J/g)
Qice = 16650 J
16650 J = - from the water.Qliquid water
16650 J = -mliquidwaterCliquid waterΔTliquid water
16650 J = -mliquidwater (4.18 J/g°C)(-26.5°C)
16650 J = -mliquidwater(-110.77 J/g)
mliquid water = 150.311 g