Hydrogen molecules in the Earths atmosphere, at an average temperature of 300 K, move at about 2 km/sec. What would be their average speed if the temperature were cooled to 75 K?

0 votes
     8 km/s
      0.5 km/s
      1 km/s
      4 km/s
      2 km/s
asked Sep 20, 2012 in Astronomy by anonymous
    

1 Answer

0 votes
1 km/s
answered Sep 22, 2012 by SkyStar ~Expert~ (2,855 points)

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