QUESTION 7 Hydrogen must be precooled during liquefaction because O the molecule

Question

QUESTION 7 Hydrogen must be precooled during liquefaction because O the molecules are so small. O The Joule-Thomson coefficient is negative at temperatures above 202K. the para hydrogen must be converted to ortho hydrogen before liquefaction can occur the molecular bonds must be broken for liquefaction to occur. QUESTION 8 The conversion of ortho to para hydrogen occurs as hydrogen is liquefied, and is important because ortho hydrogen does not obey the ideal gas law. ortho hydrogen leaks out of containers quicker. para hydrogen burns with a brighter flame. the conversion energy is a significant fraction of the energy required to produce liquid hydrogen QUESTION9 The density of liquid hydrogen at 20K is 70.85 kg/m3. Using the LHV of hydrogen, determine the energy in 1 liter of liquid hydrogen. O 8500 kWh/liter O 2.36 kWh/liter O 2.79 kWh/liter O 4.76 kWh/liter

Explanation / Answer

07) - D

08) - B

09) - A

find the pressure inside the liquid hydrogen by using ideal gas equation.then from LVH digram calculate the energy per unit lit volume.

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