Question

We want to determine the total amount of energy needed to take a 100. g sample of ice at -20 degrees C and raise the temperature to a liquid at 60 degrees C. Notice that this change goes through a phase change, so we will need to do three separate calculations and then total. Calculation 1: Raise the temperature of the ice from -20 degrees C to 0 degrees C Calculation 2: Melt the water from ice at 0 degrees C to liquid water at 0 degrees C Calculation 3: Raise the temperature of the liquid water from 0 degrees C to 60 degrees C Calculation 4: Sum Calculation 1+ Calculation 2+ Calculation 3 Tabulated Constants for Water: Specific Heat (C) for ice = 2.11 j/gC Heat of Fusion for water = 333.55 j/g Specific Heat (C) for water = 4.18 j/gC The energy needed in kJ for Calculation 4 is:

          We want to determine the total amount of energy needed to take a 100. g sample of ice at -20 degrees C and raise the temperature
to a liquid at 60 degrees C. Notice that this change goes through a phase change, so we will need to do three separate calculations
and then total.

Calculation 1: Raise the temperature of the ice from -20 degrees C to 0 degrees C
Calculation 2: Melt the water from ice at 0 degrees C to liquid water at 0 degrees C
Calculation 3: Raise the temperature of the liquid water from 0 degrees C to 60 degrees C
Calculation 4: Sum Calculation 1+ Calculation 2+ Calculation 3

Tabulated Constants for Water:
Specific Heat (C) for ice = 2.11 j/gC
Heat of Fusion for water = 333.55 j/g
Specific Heat (C) for water = 4.18 j/gC

The energy needed in kJ for Calculation 4 is:

We want to determine the total amount of energy needed to take a 100. g sample of ice at -20 degrees C and raise the temperature
to a liquid at 60 degrees C. Notice that this change goes through a phase change, so we will need to do three separate calculations
and then total.

Calculation 1: Raise the temperature of the ice from -20 degrees C to 0 degrees C
Calculation 2: Melt the water from ice at 0 degrees C to liquid water at 0 degrees C
Calculation 3: Raise the temperature of the liquid water from 0 degrees C to 60 degrees C
Calculation 4: Sum Calculation 1+ Calculation 2+ Calculation 3

Tabulated Constants for Water:
Specific Heat (C) for ice = 2.11 j/gC
Heat of Fusion for water = 333.55 j/g
Specific Heat (C) for water = 4.18 j/gC

The energy needed in kJ for Calculation 4 is:

Added by David H.

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