Chem 2: Lec 2

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  1. Specific gravity
    • -ratio of the density of a substance to the density of another substance (usually H2O at 4 ÂșC).
    • -Specific gravity is unit-less (in the ratio all units cancel
  2. Calculate the density of a substance if 323 g occupy a volume of 53.0 mL
    mL=323 g/53.0

    mL= 6.09 g/m
  3. The density of gold is 19.3 g/mL.What is the volume of 25.0 g of gold?
    Use density as a conversion factor!

    gAu---------> mL Au
  4. What is Chemistry
    Chemistry is the science of matter
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Chem 2: Lec 2
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