Calculate the total enthalpy in kJ of a 1.268 g sample of steam at 100oC going through various phase change steps to become ice at 0oC. Molar mass for H2O is 18.015 g/mol.

Chemistry
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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Calculate the total enthalpy in kJ of a 1.268 g sample of steam at 100oC going through various phase change steps to become ice at 0oC. Molar mass for H2O is 18.015 g/mol.

Round your answer to 2 decimal places.
 

Use the following data for your calculations:

 
Table 1 9.2
Specific heat and molar heat capacities for some common substances 6
Specific Heat, c
(Jg'K)
Molar Heat Capacity, C
(J mol 1 K')
Substance
Al(s)
0.900
24.3
Cu(s)
0.385
24.5
H,O(s)
2.09
37.7
H;O(()
4.18
75.3
H,O(g)
2.03
36.4
Transcribed Image Text:Table 1 9.2 Specific heat and molar heat capacities for some common substances 6 Specific Heat, c (Jg'K) Molar Heat Capacity, C (J mol 1 K') Substance Al(s) 0.900 24.3 Cu(s) 0.385 24.5 H,O(s) 2.09 37.7 H;O(() 4.18 75.3 H,O(g) 2.03 36.4
Standard molar enthalpies and temperatures for phase changes of water
Phase
Change
Fusion
Freezing
Vaporization
Condensation
Transition
0°C
0°C
100°C
100°C
Temperature
AH (J/mol)
AHfas =
6009.5
AHfreeze
-6009.5
AH.cond
-4.07 x 10*
4.07 × 10*
Transcribed Image Text:Standard molar enthalpies and temperatures for phase changes of water Phase Change Fusion Freezing Vaporization Condensation Transition 0°C 0°C 100°C 100°C Temperature AH (J/mol) AHfas = 6009.5 AHfreeze -6009.5 AH.cond -4.07 x 10* 4.07 × 10*
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