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First of all, let me tell you the weight of these gases. A pint of nitrogen weighs 10-4/10 grains, or a cubic foot weighs 1-1/6 ounce. That is the weight of the nitrogen. The oxygen is heavier: a pint of it weighs 11-9/10 grains, and a cubic foot weighs 1-3/4 ounce. A pint of air weighs about 10-7/10 grains, and a cubic foot 1-1/5 ounce.
I have put their respective weights at the lower part of this table, along with, for comparison, the weights of the other gases we have been examining: Pint. Cubic Foot. Hydrogen, . . . . 3/4 grains. 1/12 ounce. Oxygen, . . . . 11-9/10 " 1-1/2 " Nitrogen, . . . . 10-1/10 " 1-1/4 " Air,. . . . . . 10-7/16 " 1-3/8 " Carbonic acid, . . 16-1/3 " 1-9/10 "
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