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Find an expression for the boiling point of water as a function of z, the distance...

Find an expression for the boiling point of water as a function of z, the distance above sea level. You can assume the temperature at sea level is 300 K and the temperature is independent of height above sea level.   Then, use this to find the boiling point of water

a)     At the top of Mt. Sagarmatha (Everest)

b)    At the bottom of the Dead Sea

c)     In an airplane flying at 30,000 ft.

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