Extensive hydrogen bonding.
It takes a lot of energy to break hydrogen bonds and turn liquid water into a gas, therefore the boiling point for water is high.
Answer:

Explanation:
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In this case, since the thermodynamic definition of the Gibbs free energy for a change process is:

It is possible to plug in the given H, T and S with consistent units, to obtain the correct G as shown below:

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The genotype for some with attached earlobes would be ee because unattached earlobes are dominant(EE or Ee) which means attached would be recessive(ee).