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420 Member
Join Date: Sep 2005
Location: California
Posts: 2,070
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The specific gravity of a substance is a comparison of its density to that of water. Imagine a gallon bottle filled with water, a second filled with feathers, a third filled with lead weights. There are equal volumes of material present, but the bottle with the feathers will weigh less than that containing water; the bottle with lead weights will weigh the most. In order of increasing specific gravity, these materials would be: feathers, water, lead. Specific gravity can be measured precisely, or estimated by a comparison, as above. To compare the specific gravity of any two minerals, simply hold a sample of one in your hand and "heft it," i.e., get a feeling for its weight. Then heft a sample of the other that is approximately the same size. If there is a great difference in specific gravity, you will detect it easily. It is often sufficient to note whether a mineral's specific gravity is significantly higher or lower than that of other minerals. Heft each of the specimens in your mineral set. Which ones have a high specific gravity? A low specific gravity?
Not sure what the answer is to your 2nd question. What level should "it" be at? What is "it"?
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#3 | ||
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Free Thinker
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I agree with Stix but will add how specific gravity relates to a drug test. To my understanding...
The kidney concentrates the toxins or overages that the body does not need for passing during urination. Urine typically has a specific gravity of 1.002 to 1.028 Water is the master reference and has a specific gravity of 1.000 They measure specific gravity to see if you are watering down the sample. This is why when diluting, some people take heavy vitamines so there is some color and mass left in the urine. I'm not making any comment on the effectiveness of the above strategy (because I don't know). My advice, would be if you are in doubt whether you'll pass, don't risk it - get a plan 420 Magazine - Sponsors
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