The number density of atoms (chiefly hydrogen) in interstellar space is about 10 per cubic centimeter, and thetemperature is about 100 K.(a) Calculate the pressure of the gas in interstellar space, and express it in atmospheres.(b) Under these conditions, an atom of hydrogen collides with another atom once every 1 × 109 seconds (that is, once every 30 years). By using the average speed, estimate the distance traveled by a H atom between collisions. Compare this distance with the distance from the Earth to the Sun (150 million km).
The number density of atoms (chiefly hydrogen) in interstellar space is about 10 per cubic centimeter, and thetemperature is about 100 K.(a) Calculate the pressure of the gas in interstellar space, and express it in atmospheres.(b) Under these conditions, an atom of hydrogen collides with another atom once every 1 × 109 seconds (that is, once every 30 years). By using the average speed, estimate the distance traveled by a H atom between collisions. Compare this distance with the distance from the Earth to the Sun (150 million km).
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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The number density of atoms (chiefly hydrogen) in interstellar space is about 10 per cubic centimeter, and the
temperature is about 100 K.
(a) Calculate the pressure of the gas in interstellar space,
and express it in atmospheres.
(b) Under these conditions, an atom of hydrogen collides
with another atom once every 1 × 109
seconds (that is,
once every 30 years). By using the average speed, estimate the distance traveled by a H atom between collisions. Compare this distance with the distance from
the Earth to the Sun (150 million km).
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