Problem: Interstellar space has an average temperature of about 10 K and an average density of hydrogen atoms of about one hydrogen atom per cubic meter. Calculate the mean free path of hydrogen atoms in interstellar space. Use d = 100 pm as the diameter of a hydrogen atom.

FREE Expert Solution

We are being asked to calculate the mean free path of hydrogen atoms in interstellar space


The formula for the mean free path is

l = 12πd2NV


where 

d = diameter of the molecule

(N/V) = density


96% (337 ratings)
View Complete Written Solution
Problem Details

Interstellar space has an average temperature of about 10 K and an average density of hydrogen atoms of about one hydrogen atom per cubic meter. Calculate the mean free path of hydrogen atoms in interstellar space. Use d = 100 pm as the diameter of a hydrogen atom.

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Velocity Distributions concept. You can view video lessons to learn Velocity Distributions. Or if you need more Velocity Distributions practice, you can also practice Velocity Distributions practice problems.