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Old 07-01-19, 10:23 AM
  #13653  
cmh
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Originally Posted by Cypress
Water vapor is molecularly very light compared to air. Add more water vapor to the air, and its density will decrease. A gallon of water (8.34 pounds) will produce about 1600 "gallons" of steam, if that helps you visualize how not dense water vapor is...
Thanks - that squares with the google searching I did and does help me visualize it.
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