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Question
Consider the following changes at constant temperature and pressure:
H2O(s) →H2O(l); 
H1
H2O(l) →H2O(g); H2
H2O(g) →H2O(s); H3
Using Hess's law, the sum H1+ H2+ H3 is
A) equal to zero.
B) sometimes greater than zero and sometimes less than zero.
C) less than zero.
D) cannot be determined without numerical values for H.
E) greater than zero.
Answer
This answer is hidden. It contains 1 characters.
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