Specific Gravity. Continued
Description
This section is from the "Encyclopedia Of Practical Receipts And Processes" book, by William B. Dick. Also available from Amazon: Dick's encyclopedia of practical receipts and processes.
Specific Gravity. Continued
49. To find the Specific Gravity of a Liquid or a Gas
49. To find the Specific Gravity of a Liquid or a Gas. Weigh it in a specific gravity bottle, glass flask, or other vessel of known capacity; and dividing that weight by the weight of the same bulk of water, the quotient is, as before, the specific gravity.
50. To find the Specific Gravity of a Solid Body Soluble in Water
50. To find the Specific Gravity of a Solid Body Soluble in Water. Take its specific gravity in regard to some liquid which does not dissolve it, and multiply by the specific gravity of the liquid. Thus, a piece of sugar, whose weight is 400 grains, is found to lose 217.5 grains if weighed when immersed in oil of turpentine; this would make its specific gravity, as compared with oil of turpentine,4 00/217.5=1.84. The specific gravity of the turpentine is .87; then, 1.84 x .87=1.6, the real specific gravity of the sugar.
51. To find the Specific Gravity of a Body in Powder Insoluble in Water
51. To find the Specific Gravity of a Body in Powder Insoluble in Water. Introduce it into a bottle whose capacity is known; fill the bottle with pure water at 60°. It will hold as much less water as is equal to the bulk of the powder, and the weight of the powder in air divided by this difference will give the specific gravity. Thus, supposing the bottle to hold 1000 grains of water, 100 grains of emery are introduced, and the bottle filled up with water. If no water were displaced the two should weigh 1100 grains; they really weigh 1070; the difference, 30 grains, is the weight of water displaced; 100/30=3.333, specific gravity of the emery.
52. To Determine the Weight of a Body from its Specific Gravity
52. To Determine the Weight of a Body from its Specific Gravity. A cubic foot of water weighs 1000 ounces; hence, to determine the weight of a given bulk of any body the specific gravity of which is known, multiply the cubic content in feet by 1000, and this by the specific gravity, and the product will be the weight in ounces avoirdupois.
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