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A SUPPOSED TREASURE OF OLD SILVER JEWELRY IS UNCONVERED. a.02M^3 BOX OF THE "OLD JEWELRY" HAS A MASS OF 177KG.IS IT R EALLY OLD SILVER? IF NOT WHAT IS IT?

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    If the jewelry completely filled the box, with no air gaps, the density of the contents would be
    177,000g/2*10^4 cm^3 = 8.85 g/cm^3

    The density of silver is 10.5 g/cm^3

    Allowing for air gaps, the contents could be silver, or even gold. This is not a well formulated question. Jewelry is not stuff that you stack like ingots or gold bars.

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