The phase diagram of a substance is shown below. 
-The approximate normal boiling point of this substance is
Definitions:
Hang-gliding
A recreational activity or sport where a person flies a light, non-motorized aircraft which is launched by leaping from a height.
Responsible
Being accountable or answerable for something within one’s power, control, or management.
Title Search
The process of examining public records to verify the legal ownership of property and determine if there are any claims or liens against it.
Standard of Care
The level of carefulness and caution expected from someone who has a responsibility to act carefully.
Q8: What is the geometry around the central
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