Interstellar space far from any stars is usually filled with atomic hydrogen (H) at a density of 1 atom/cm3 and a very low temperature of 2.73 K.
a) Determine the pressure in interstellar space.
b) What is the root-mean-square speed of the atoms?
c) What would be the edge length of a cube that would contain atoms with a total of 1.00 J of energy?
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